What are the two rotational forces?
Centripetal & centrifugal force
How can you move a bucket without spilling any water?
Spin it! The rotational forces keep the water inside the bucket.
How long does it take for the sun to rotate 1 time?
27 days (1 month)
How long does it take for the Earth to rotate 1 time?
24 hours (1 day)
How long does it take for the sun to orbit 1 time?
Trick question! The sun doesn't orbit anything, it is the center of our solar system.
How long does it take for the earth to orbit 1 time?
365.25 days (1 year)
How long does it take for the moon to orbit the earth 1 time?
27 days (1 month)
How long does it take for the moon to orbit the sun 1 time?
365.25 days (1 year)
What is the direction of the sun's orbit?
Trick question! The sun doesn't orbit anything.
What is the direction of the earth's orbit?
Counterclockwise
What is the direction of the moon's orbit?
Counterclockwise
Why do we have day and night?
Our planet spins on an invisible line — called 'an axis'. Half of the Earth is always facing the Sun, meaning it is lit up and is daytime!
When it is night in the western hemisphere, where is it day?
The eastern hemisphere (the opposite part of the globe)
Tell me one place where it is night when it is day in Saigon.
Any country in the Western Hemisphere
If the earth didn't spin on its ________ we would not have day & night.
Axis
