Day & Night
Seasons
Moon Phases
Eclipse
Gravity & Inertia
100
24 hours is...
what is one day
100
There are 4 seasons and this many days in one revolution of Earth around the sun.
What is 365 days
100
The Earth experience different phases of the moon because of this.
What is the moons revolution or cycles around Earth
100
When one object blocks the light of another we call it this.
what is an eclipse
100
An invisible force that pulls to objects with mass together
what is gravity
200
This causes day and night
what is Earth's rotation
200
These are the two reasons for Earth's seasons
What are it's tilt and it's orbit
200
It takes this long for the moon to cycle or orbit Earth
What is 28 days
200
The moon blocking the sun causes this
What is a solar eclipse
200
objects in motion stay in motion, objects at rest stay at rest
What is inertia
300
This invisible line is what our Earth rotates on
what is an axis
300
In this diagram, what season is S2 experiencing? 
What is summer
300
In this diagram, this position represents a new moon
What is position 1
300
The Earth blocking the sun causes this.
What is a lunar eclipse?
300
The strength of this depends on both mass and distance
What is gravity?
400
In this diagram, which points on Earth would be experiencing night time? 
What are N1 and S1
400
In this diagram, which hemisphere is experiencing the most direct rays of sunlight? 
What is the southern hemisphere
400
In this diagram, this position represents a full moon
What is position 5
400
Diagram A shows what?
what is a solar eclipse
400
Y represents this
what is gravity
500
Earth rotates in this direction
What is counter-clock-wise
500
The Earth doesn't actually change it's tilt, but it's tilt changes as we orbit the sun. Which season is the Earth at a neutral or no tilt?
What is spring and fall
500
Light on the right tells us the moon is...
what is waxing
500
Total eclipses aren't really rare, we just don't see them that often. Why? 
because the path of totality is small, because the umbra is small, because of the moons orbit
500
X represents this 
What is inertia