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Everything falls downward or towards the Earth's center
The force that pulls one object toward another object is:
Earth's gravity pulls all objects towards the planet's center
One factor that affects the strength of gravity's pull is:
The gravitational force on the object
The size of the object
The mass of the object
The distance between two objects pulling on each other
The farther from the Earth's surface an object is, the stronger gravity pulls on it.
The revolution of the moon around the Earth is caused by:
The gravitational force between the moon and Earth
The gravitational force between the moon and sun
The mass of the moon and Earth
The revolution of the Sun
The gravitational force between the Sun and Earth keeps Earth in motion around the sun
Gravitational force pulls objects towards each other
What is the best definition of a star?
a ball of hot liquid that twinkles
a ball of heat that gives off light and energy
a planet that is shiny
an object in space
Why does the sun appear brighter and larger than any other star?
It is the farthest star from Earth
It is the closes star to Earth
It is the largest and brightest star in the universe
It is smaller and more powerful than any other star.
What determines apparent brightness of a star?
The star's size and distance from Earth
The temperature of the star.
The color of the star.
How close the star is to another star.
The sun is a medium sized star.
The brightness of the Sun blocks out the light of larger and brighter stars that are further away.
Each star's size and distance from the Earth affects how bright it appears to us.