Celestial Bodies
A word for all things in space.
Celestial Body
Rotation
It reflects sunlight.
Planet closest to the sun.
Mercury
What is the sun?
Star
An object that moves around a planet.
Satellite
How long it takes for one rotation of the earth.
24 hours / 1 day
How long does it take for the moon to orbit earth?
29 days, 1 month
Planets that have a solid surface, like earth.
Rocky planets
Whats the name of our galaxy?
Milky way
A point in the sky that creates its own light.
Star
How long it takes the earth to move around the sun.
365 days + 6 hours
What word describes the different "shapes" of the moon?
Lunar Phases
Which Italian scientist is famous for upgrading the telescope and changing our view of the universe?
Galileo
How we measure distance in space
light year
Planets with no solid surface.
Gas giants
The angle of tilt of the earth's axis.
23 / 23.5 degrees
When the earth is between the sun and the moon.
Lunar eclipse.
Give two reasons why people long ago thought the earth was at the center of the universe.
Objects in the sky "move" but not us.
Can't feel the movement.
Stars don't change position.
8 mins
A space rock that reaches the earth's surface.
Meteorite
Explain what causes the earth's seasons.
The earth's tilt and orbit around the sun means that at some times each hemisphere is tilted towards or away from the sun, giving more or less sunlight.
Why do we only see one side of the moon from earth?
Its rotation matches its orbit.
What evidence changed our mind from the geocentric to heliocentric worldview? Give two.
The phases of Venus
Moons around Jupiter
Understanding gravity better
Photos and information from advanced telescopes and rovers
What event "created" the universe and when did it happen?
Big bang, 13.5-14 billion years ago