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.