Share Earth's Motion
Save to Folder
What do we call the theory of astronomer Copernicus that stated that the Sun is at the center of the solar system?
heliocentrism
What is a round, three-dimensional object, like a beach ball called?
a sphere
"Rotate" means ____________
to spin on an axis
"Revolve" means __________
to go around or orbit something
Is a spinning top an example of rotate or revolve?
rotate
Is a tetherball going around a pole an example of rotate or revolve?
revolve
Is a horse on a merry-go-round an example of rotate or revolve?
revolve
Is a ballet dancer pirouetting (turning on pointed toe) an example of rotate or revolve?
rotate
What is an axis?
An imaginary line that runs through the center of the Earth from the North Pole to the South Pole
In what direction does the Earth rotate?
counterclockwise (left to right)
How long does it take Earth to complete one full spin or rotation?
24 hours
When the Eastern hemisphere is facing the sun, the Western hemisphere is experiencing ______
nightime
Earth's axis is tilted _______ degrees in relation to the Sun.
23.5
How long does it take the Earth to make one complete revolution around the Sun?
365 days
What holds the Earth and the other planets in their orbits?
the Sun's gravity
The Earth's axis is always pointed in which direction? (N, S, E or W)
to the North (the North Star -- Polaris)
