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5th Earth and Moon

seasons, days, years

QuestionAnswer
a force of attraction, or pull, between any two objects gravity
the path one object takes around another object orbit
the tendency of a moving object to keep moving in a straight line or of any object to resist a change in motion inertia
one complete trip of one object around another object revolution
a complete spin on an axis rotation
How long does one revolution of the Earth around the sun take? 365 days 6 hours
A year is 1 revolution around the sun
How long does it take the earth to complete one rotation on its axis? 24 hours
What causes the seasons on Earth? tilt of the earth on its axis
An imaginary line that passes through the center of a planet or moon which they spin around. axis
An imaginary horizontal line that goes around the center of the earth dividing it into Northern and Southern hemispheres. equator
The tilt of Earth's axis always points in the same direction
Earth is tilted on its axis at an angle of 23.5°
When it is Summer in the Northern Hemisphere it is what season in the Southern Hemisphere? winter
One rotation makes up a day
On March 21 what season begins in the Northern Hemisphere? spring
On June 21 summer begins in the Northern Hemisphere. What season begins in the Southern Hemisphere on this day? winter
On September 21, Spring begins in the Southern Hemisphere. What season begins in the Northern Hemisphere on that day? autumn or fall
Which is moving in the sky, sun, stars, or earth? earth
Earth's rotation causes the illusion that the Sun rises in the _____ and moves in an arc across the sky to set in the ____ east, west
If Earth's axis was not tilted, we would not have_________. seasons
 



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