U1L1
U2 L1
U2L2
U3L1
U3L2 and U3L3
100
A large celestial body that is made of gas and emits light
What is a star
100
The sun and all bodies that orbit the sun
What is the solar system
100
The inward force that causes an object to move in a circular path
What is centripetal acceleration
100
A day is how long it takes for earth to make one ______
What is a rotation
100

This is how long it takes the moon to orbit earth once

What is 28 days?

200
A large collection of dust, stars, and gas held together by gravity
What is a galaxy
200
A model of the solar system where the sun is the center
What is a heliocentric model
200
He said that all things are attracted to each other by gravity
Who is Sir Isaac newton
200
A _____ is how long it takes a body in space to orbit another body in space
What is a revolution
200
when the moon is in between the sun and earth
What is a solar eclipse
300
Some giant galaxies can have up to ______ stars
What is 100 billion
300
A model of the solar system where the earth is the center
What is a geocentric model
300
The formation of our solar system began _______ billion years ago
What is 4.6
300
The amount of degrees of earth's tilted axis
What is 23.5 degrees
300
when the moon moves through earths shadow
What is a lunar eclipse
400
Mercury, Venus, earth and mars
What are the terrestrial planets
400
Planets orbit in ellipses with the sun at one focus
What is Kepler's first law
400
These were the first stage of planets
What are planetisimals
400
When both hemispheres get the same amount of sunlight
What is an equinox
400
these are caused by the gravity of the moon
What are tides
500
Jupiter, saturn, uranus and neptune
What are the gas giants
500
He made significant changes to the newly invented telescope and supported the heliocentric model
Who is Galileo Galilei
500
The sun was born through this process
What is nuclear fusion
500
This is how many equinoxes and solstices there are in a year
What is 4 or 2 each
500
How many low and high tides combined there are in a day
What is 4
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