It takes the moon this many days to complete a revolution around Earth.
About 27 days
100
Why does the moon appear to be the biggest object in the night sky, when it is actually smaller that many of the stars and planets?
It is the closest object to Earth.
100
In the Northern Hemisphere, what causes summer days to be warmer than winter days?
The Earth's tilt on it's axis. During the summer, the Northern Hemisphere tilts toward the sun and in the winter the Northern Hemisphere tilts away from the sun.
200
The imaginary line that Earth rotates around.
What is the axis?
200
The movement of Earth AROUND the Sun.
What is the term revolution?
200
When it is winter in the Northern Hemisphere, it is what season in the Southern Hemisphere?
What is summer?
200
Why does the moon appear to glow?
The sun's light is reflecting off the moon.
200
What is the imaginary line that splits Earth into hemispheres?
Equator
300
What is the invisible force that pulls everything towards the center of the Earth called?
Gravity
300
What does the term "rotate" mean?
To spin
300
How long does it take the moon to rotate?
About 27 days
300
A friend tells you that Earth's elliptical orbit around the Sun is what causes the seasons. What should you tell your friend?
You are wrong! It is because of the tilt of Earth on it's axis that cause the seasons.
300
How many degrees is Earth’s axis tilted?
23.5 degrees
400
The apparent changes in the shape of the moon are known as this.
What are moon phases?
400
True/False
Earth and Moon exert different gravitational forces because they have different masses.
What is true?
400
The idea that the Earth revolves around the sun was presented and proved by this person.
Who is Galileo?
400
What are the positions of the earth, sun, and moon during solar eclipse?
Sun, then moon, last Earth.
400
What are the four seasons on Earth?
Spring, Summer, Fall, Winter
500
In what direction does Earth move when you’re viewing it from the top of the North pole?
Counter-clockwise
500
Earth's rotation causes these two things to happen.
What is day and night?
500
What phase is the moon in when we can see the entire moon?
Full Moon
500
What are the positions of the Sun, moon, and Earth during a lunar eclipse?
The positions are Sun, then Earth, then moon.
500
When the Southern Hemisphere is experiencing Fall, what does the Northern Hemisphere have?