Moon, Earth, Sun Unit Flashcards
What do people call a group of stars?
constellation
What is earth’s annual motion around the sun?
revolution
how many days does it take for the Earth to go around the sun?
365
How long does it take Earth to rotate once?
24 hours or 1 day
The moon is what fraction of the Earth?
1/4
The calendar we used is based on what?
The seasons or how long it takes Earth to go around sun once
The tendency of an object to resist a change in motion is…
inertia
The tilting of the Earth causes what?
seasons
The force of gravity between 2 objects depends on what 2 things?
mass and distance
What 2 things keep the Earth in orbit around the sun and the moon in orbit around the Earth?
gravity and inertia
What causes the changes in the appearance of the moon?
The position of the Earth, sun and moon
What order are the Earth, sun and moon during a lunar eclipse?
sun, Earth, moon
What order are the Earth, sun and moon during a solar eclipse?
Sun, moon, Earth
The sun is how many times bigger than the Earth?
1000
The sun is how many times bigger than the moon?
4000