Science -- Earth, Moon, & Sun Flashcards
____ is a force that pulls objects toward each other.
Gravity
_____ is how far north or south of the Equator a place is.
Latitude
The lighted part of the moon as it appears from Earth is called a _____.
phase
Spinning around means to _____.
rotate
_____ is to move around another object.
Revolve
An _____ is an imaginary line around which Earth spins.
axis
The sun, moon, and stars APPEAR to move across the sky in which direction?
a. North to South
b. South to North
c. East to West
d. West to East
c. East to West
Star patterns appear to move across the sky over several months. Why is this so?
a. As Earth rotates, the star patterns appear to rotate.
b. The start patterns are moving in space.
c. As the star patterns move around Earth, their patterns change.
d. As Earth revolves around the sun, its position in space changes.
d. As the Earth revolves around the sun, its position in space changes.
Why do seasons occur on Earth?
a. Earth rotates on its axis.
b. Earth revolves around the sun.
c. Earth is tilted on its axis.
d. The moon has gravity.
c. Earth is tilted on its axis.
If the Northern Hemisphere is tilted away from the sun, what season is most likely occurring?
a. Summer
b. Winter
c. Spring
d. Autumn
b. Winter
How long does it take the Earth to revolve around the sun?
365 1/4 days
How long does it take the Earth to rotate on its axis?
24 hours or 1 day
How long does it take the moon to revolve around the Earth?
28 days or 4 weeks
How long does it take the moon to rotate on its axis?
28 days or 4 weeks
TRUE OR FALSE: The moon has strong gravity.
false
TRUE OR FALSE: The sun is made of hot gases.
true
TRUE OR FALSE: Day and night occur because of Earth’s rotation.
true
TRUE OR FALSE: It takes the Earth 365 days to rotate on its axis.
false (24 hours)
TRUE OR FALSE: The moon and Earth are the same size.
false
TRUE OR FALSE: The sun is a star in our solar system.
true
On a clear night, if you cannot see a moon in the sky, what phase is the moon in?
New moon
On a clear night, if you can see the entire circle of the moon lit up, what phase is the moon in?
Full moon
Mary is making observations about the sun. Which of these could be observations that Mary makes?
a. It is after sunset. The sun is overhead.
b. It is noon. The sun is low in the western sky.
c. It is still dark. The sun seems to be rising from the west.
d. It is early in the morning. The sun seems to be moving in the eastern sky.
d. Early morning; eastern sky
