lol blogger. this gives me seventh and eighth grade nostalgia

This week in science, we started the unit of Energy we learned the different types of energy that there are and how they could effect us in the simplest of ways.
Some things that you should know before identifying what types of energies that there are and how they effect the different systems that there are.
Systems: a group of objects that strive for one goal.
We discussed what gave certain objects such as rubber bands, blocks and cars "chalk smashing ability".

For Example, we give a block chalk smashing ability, by lifting the block directly above the chalk that is standing on a counter by it self. and simply drop the blocks. This gives the blocks"chalk Smashing Ability.

Identifying systems: You could identify what is in your system by what different forces are exhibited on the system. For example, you have the earth trying to pull down an elephant that is in the air from jumping on a trampoline.
An initial system is when no external force is exerted on the system.
The Final System is when an amount of force has been exerted on the system and something occurred in the system.

Energy
When we are touching something, pushing something or even feeling something, we are exerting energy on that object. When we are lifting a book from the ground, we are applying a force upward defying the force Earth and giving the book "energy of going up".


Formulas:
E/M=A
Energy divided by mass equals acceleration. We know that all objects on Earth accelerates at a rate of 9.8 m/s or rounded up to 10 m/s. So we know that E/M=10
if we find out that the energy or mass of an object, we could calculate the missing variable that is left out in the formula.

One concept that i could tell myself at the beggining of the week

Planetary orbit is based on initial velocity. The way the earth became a revolving planet is: there was an initial velocity that sent the earth at a great velocity. Scientists believe this was the great bang. over a course of a long time, the earth had lost most of the great initial velocity that it had acquired but still had some velocity left. Then it crossed into our solar system and was attracted by the gravity of the sun and contradicting to its initial velocity, the sun pulled on the earth. that is what caused us to go into orbit around the sun. the same thing happened with the moon. there was an initial velocity and it came to the earth and the pulled on it putting it in an orbit. This was very lucky to us because if we were further from the sun or closer to the earth, the earth would not have been able to support life.

On monday we discussed geographical features of the moon. here is a list of things that could be identified on the moon:
1)Rays
2)craters
3)rilles

I am having trouble uploading a picture on blogger. so here is the url to a picture with rilles.
http://www.honeysucklecreek.net/images/images_Apollo_15/hskap15cratersteague.jpg

This week in science

This week in science,I was not here on Monday and on Tuesday and on Wednesday.
i learned that there were different types of tides. these tides are:
Neap Tides: Lower tides than spring tides. these tides occur when the moon is in every phase except New Moon and Full moon.
Spring Tides: these tides occur when the moon is in New Moon phase or Full moon phase because the gravitational pull combined from the sun and the moon are greater than the divided gravitational pull of the sun and the moon.

We also discussed the importance of an equinox and what it is: it is when the earth is in a specific angled slant that the sun points to.
Equinox means equal nights. This happens usually in August when the amount of sunlight is equal to the amount of darkness.
Summer solstice is when there is more sunlight than night.
Winter Solstice is when there is more night than day.

We also had to do a simulation of how the earth possibly came into orbit around the sun.
The earth had to have an initial force when coming into the sun's gravitational pull.This must have started the orbit around the sun. To have started the initial force, that the earth came into the sun's orbit with an initial force, scientists believe this was caused by THE BIG BANG.

last week in science

last week in science, i did not learn a lot. i was out sick on Monday and had science Olympiad on Tuesday and had science honors biology test on Wednesday and Thursday and attended school on Friday.
So, on Friday, i learned that the moon causes the tides by its placement in and its relative position to the earth.

Astronomy

This week, we started studying astronomy.On Monday, we started by looking at a simulation of the moon in its different phases when it is revolving around the earth. We learned the different phases of the moon:
We learned that what ever phase we see the moon in, the moon is always 50% visible.

Full Moon:the moon is fully illuminated by the sun's light.
Waning Gibbous: the moon is mostly illuminated,but is starting to loose its illumination and become less and less visible.
Third Quarter: The moon is half illuminated and half not.
Waning Crescent: The moon is more not illuminated than illuminated.
New Moon: The moon is not visible.
Waxing Crescent: The moon is gaining its illumination.
Waxing Gibbous: The moon is almost fully or more than half way illuminated.

We learned that the moon revolves and rotates at the same time. During the 29.5 day course that it takes, it slowly revolves around the earth and rotates a tiny bit. So, every day, we see a new part of the moon (or don't see) when it turns. For Friday's Homework, we were supposed to research how we get tides.
I understood it as this: the earth rotates every day. The moon cannot keep up with the immense speed of rotation that the earth does. The moon's gravity pulls on the water in the water bodies and tries to pull them off the Earth. When the earth rotates, and gets further away from the moon (during the day if not in Waning Crescent of waxing gibbous.

Newton's Third Law

This week in science, we learnt that if there is an arrow on a force diagram that is facing down, the object is accelerating or decelerating. It is not showing an object going in a direction.

Newton's third law claims that the amount of force exerted by an object gets exerted back on the object that exerted that the force. This is cenerio a i am using as an example: (to the left)

The young girl pushes the old lady and soon they both will go in opposite directions the same distance from the origon that the girl had first applied the pushing force.

Newton second Law explains that force is equal to mass multiplied by acceleration. F=(m/a)

And that concluded our week in science.

Force part two

this week in science, we learned more on the unit force. We discovered that there is gravity,"Force of the Earth puling on us": is weight.
We also discussed the idea of the mass or massiveness. Mass is the amount of matter that is consisted in a substance.

Mass is what gives us weight. It is because the mass of a substance is pulling down on us, that of force that is pulling down on us gives us our weight!

In space, there is no gravity until we come close to a huge mass like the moon or another planet. So, if we launch a rocket into space, the rocket will stay in the course that we put it in. Then the rocket will start accelerating toward a mass because of the mass' gravity is bulling down on the rocket toward the mass. So eventually, with the gaining acceleration of our rocket, the rocket will crash into the mass.

Since the moon has a lesser gravity than the Earth, the moon will have a less pull on the objects near it. Or less gravity in the objects near it.

Force

This week in science, we learnt that there is something that makes things and us move. and that is force. Force is a push or a pull on a object.

So, we learnt how to make force diagrams. a force diagram is a diagram that shows all the different forces exhibited on the object of interest.

If the object of interest is staying in the air, either held up or stagnant in the air, that means there is a positive force and is contradicted by a negative force and so, that means there is 0 newtons being exited on the object of interest which means the object is staying in the air or is being held up.

This is how i know how many newtons are being applied to the object to make it stay in the air:(to the left)

Science this week

Well this week in science we did not do many things. We just went according to the packet that we have all the Kinematics questions in. We did learn something new about velocity arrows. This is the same thing as the dot diagram or the motion diagram except this has arrows to show which direction that the object of measure is traveling in. Mark, Chris and i did a lab on how to measure the distance traveled when we hit a basketball with a hammer. We found we created a graph ob it and we were able to conclude that the basket ball starts off at a fast speed, then slows down constantly over a long period of time. Then on Friday, we had a partner quiz on all the things that we had learnt. We were supposed to make a graph on how fast somethings was going. And, that concluded our week in science

This is important for us to learn so we know how to calculate speeds pf things later in life if we are talking a physics career.

Science in school this week

this week in science, We only did tings about lab report on how we could find the normal speed that our object was moving at.

Our objective was to locate where in six meters would a fast car and a slow car, we took the speed of the fast car by measuring how long it took the car to travel six meters, then we divided the six meters by the seconds the time that it took the car to accomplish the six meters. The equation that we used was: Change in Position

Change in time

So, the fast car's speed came out to be 14.56 seconds over the distance of 6 meters.

The slow car's speed came out to be 27.6 seconds over 6 meters.

The fast car's speed came out to be 0.411 meters/seconds

The slow car's speed was 0.22 meters/seconds

Thats almost half the speed of the the fast car's speed.

So, we predicted that the the crash between the two cars shall take place somewhere in the six meters closer to the slow car.

Before we did this in class, we learnt what a slope was. It is the same thing as the speed. You calculate the slope by taking one point of the position and subtract the second point from the first point. Then divide that by the first point's time and subtract the second points time.

cow eyes!!!

i didn't blog when we did the cow eyes because i had the flu and was out on the Wednesday. The cow eye dissection was very important because that showed us how the eye works and how it lets the light pass through the eye causing us to see This is very important because we should know how our eyes use refraction to let us see and how the principals of light are applied to how we see.

We got to see some of the following parts in the cow's eye:

1. Retina
2. Optic nerve
3. lens
4. Iris
5. pupil
6. Cornea
7. Optic disk

It was pretty cool.

what i learnt was that the light would enter the eye and refract in the Aqueos Humerous and go through the pupil and refract in the lens and goes to the retina and casts the picture of what the light bounced off of and thats how we see.

A three day week in science

This week, we only had three days to learn things in science. On Monday, we took a partner quiz reviewing a lot of things of that happened in science to make sure that we remembered those things.

Trend lines

According to my understanding, A trend line doesn't have to exactly fit the dots that were placed on the graph because it shows how much uncertainty is in the results on the graph.

The black trend line shows that the results could have been according to the path of the line and no the results displayed on the graph.

On Wednesday, we discussed or homework which is about functions or equations to help create an index. this is an example function like we got in our home work.

Bob starts at t1 hours and reaches her destination at t2 hours at a position h1 and reached a position of h2, our function would be... t2-t1*h2-h1.

This is important to us because functions help us calculate complex things that we will need for jobs like rocket science and professions in math.

science on the week of halloween

this week in science, i was sick from the flu until thursday:

On thursday, i had no clue what was going on.

we talked about how an index works. this is the most simplified ratio when making a ratio on a quantitative observation.

We use index making when there is something moving per a time measure.

suppose a pop corn machine makes 10 corns in the period of 7 seconds. This is a ration of how it looks before simplification

10/7=?/1

so, we divide the ten by seven and get 1.428.

that was the rate of how many kernels were popped in one second. this is a simplified index.

This is important to us because we should be able to know how to calculate simplified ratios for different rates.

this week in science

this week in science, we discussed the last things that we would need for the test on Monday the 19th.

we discussed that the waves in a pool spread out and bounce off objects just like they do from a light source bouncing off objects.

When there is an object blocking a wave from passing, the part of the wave that is blocked will be stopped and will not pass, but the part of the wave that is not blocked, will pass around the object blocking the other half of the wave.

The other thing we learnt was that the different surfaces that light hits off, has a different texture, so therefore, it reflects the light in a different manner.

We also learnt that when light hits glass, the light would refract because when light goes from a less dense medium to a higher dense medium, the light slows down and changes direction and this is called refraction.

When drawing this refraction, the light always goes through the denser medium and bends down towards the normal line. There is a specific formula but Mr. Finley and Mr. Segen said that doesn't matter.

This is important to us because when water is on our wind shield, the water refracts and makes every thing seem bent because of refraction that takes place when the light passes through the water on the wind shield.

this week in science

this week in science, we were discussing what other forms that light could travel in other than straight lines like we have expressed in previous discussions and experiment drawings that we have drawn.

We have read that in the 1600's, Isaac Newton thought of a ray diagram that consists of light rays traveling in the form of waves or particles. The wave model is better to use when we are talking about shadows. We explain shadows as when the waves gets topped by a solid and still bend around the object making the dark part very crisp. But as the waves hit the edge of the solid substance, they bend around the substance and travel while spreading out and when they hit the ground, then they have light around this darkness which is caused by the light blocked off by the solid substance.

The particle model explains how we see. the balls or particles bounce off objects and go into my eye causing me to see what ever they bounced off.

We were led into this discussion on how else does light travel. So we compared i to when we bounced basketballs and dripped water droplets into a small collection of water and saw how the waves\ripples traveled through the water and would not go behind a solid substance which was in the water.-the ripples would not go through the solid substance, but they go around the solid mass and spread all over the water quickly.

Back to the particle models

The particle model claims that the particles bounce off the masses that they hit bouncing particles everywhere. and then, those particles go into our eyes letting us see what the y bounced off of.

The wave particle model claims that the waves are just like the light rays and they travel like the light rays and they bend around a mass and and light casts on the ground. and the parts that the light could not reach due to the mass, is called the shadow.

Thats what we learnt in science,(i think) jkjk

this scientific ideas that we should know about shadows are: when we want ot make a shadow, all we have to do is stand and we know how to focus our shadow when we want to and make our shadow fuzzy and blurry if we want.

We would be able to keep something cool if we want by blocking off light that could fall onto the object we want to keep cool.

scince in October

This week in science,

this week in science, i learnt that when the laser i pointed at a mirror, the same angle that it is shot at, in the same angle, the laser will leave the mirror.

as you see, the ray comes and hits the mirror at a at a 45 degree angle. Then when leaving the mirror, the light ray leaves at the exact same angle that it came and hit the mirror.

I was able to test this in class because in my experiment, we glued a protractor and pointed a laser pointer at a certain angle. Then we put some flour and poured it on the laser beams. and the laser beams bounced off the particles of dust showing us the direction of the beam of laser. Then, we were able to see that the angle that we pointed the laser at, on the opposite side, the laser left at the exact same angle.

I learnt this by thinking

"how will we be able to measure the angle that the ray of light comes and leaves at?"

Then when we are measuring angles, we need a protractor. So, we have to include a protractor. and we need to see the ray to be able to measure it. so, we but some dust in the beam for the beam to bounce off the dust and we were able to see the rays, and we measured the angles they came and left. At 80 degrees, the rays of the laser came and left at the same angle.

We should Know this because in case we want to light some place up for a laser show, we should be able to reflect the light in directions we want to move the light where we want to.

this week in science

this week in science, class, some of the science ideas that i learnt were that when the laser pointer points the laser at something and it bounces off the solid object that it was pointed, and reflects to many different places sending light rays all over the place. And so, the light from the laser pointer comes into your eye after reflecting off the wall and thats how you are able to see the laser point on the wall on teh other side of the room.

I learnt this by thinking

"how are we all (everyone in the class) able to see the little dot from the laser on the wall from the angles we were looking from. so, we decided on the conclusion that the light reflects off the wall and

the rays go in many directions going into our eyes. then we are able to see the dot there."

It is important to know this because in life, if we do go into the field of medicine for the eye, we should know how the eye works in order to diagnose a problem in the eye.

9/14/09

this week in science, we started our light chapter. We had to conduct experiments in which we tested how a beam of light gets from the laser pointer to the wall or any solid object. likewise a bulb to all around us.

Then we had to figure out how we are able to see this happen. I found this really helpful website that helped me a lot understanding how the eye works.

This is the link to it

human eye helpful

this week i learnt that we always have to use our scientific knowledge to help us a round in life.

this week, we had to create an experiment on how we could test how a laser could reach a wall and how it gets to our eye for us to see. i had to devise an experiment to test how this works. in another case, last week we had to think of ways to find out the truth whether mr. finley watches kids on close captioning tv, we had to create an experiment to find out if he really does this and why he does this.

So, we have to create experiments all the time and think of possible outcomes that could affect us.

i learnt these ideas by

1 researching(how the eye works)

2 thinking about when in life i use my creating experiments skills and testing them.

3 by thinking of all the possible ways some thing could happen to effect us.(laser pointer)

so, it is always good to have these ideas in mind because in life, we will always need them.

this week in science, we started meterology. this is the study of the weather. We learnt how to create clouds and how evaporation works. We also had to read a lot of online text books.

When we created clouds, we gave the water droptets a different molecule to attach onto when mr. finley added the smoke on the bottle. This let the watter particles surround the smoke molecule and form a cloud and create condensation.

We also learnt that when things get hot, the particles move away from eachother and the object becomes bigger. SO, if a ball is not fitting in a hole,(dont think badly) then heat the hole. The whole's particles will go away from eachother and therefore, the hole will be bigger ot fit teh ball in. When we run something in cold water, the particles contract and the object becomes smaller.