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5.1
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5.2
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5.3
100
This is what happens to the gravity as objects get closer.
What is gets stronger
100
When the Moon can not be seen from Earth because the sun is not shining on it.
What is Lunar Eclipse
100
First satellite sent into space by Russia.
What is Sputnik
100
Asteroid that hits the surface of a planet or moon after traveling through space.
What is Meteorite
100
This is how a star forms.
What is when a could of dust and gas (nebula) collaps into a ball because of gravity.
200
to spin around an axis
What is Rotation
200
The movement of an object that is circling around a large body because of gravity.
What is orbit
200
This step comes after testing it in the engineering design cycle.
What is to evaluate Results
200
Ball of ice, rock, frozen gasses, and dust that orbit the sun.
What is Comet
200
A single unit of light energy that is both a wave and a particle.
What is photon
300
This is the position where only a tiny part of the moon can be seen
What is New Moon
300
to move around another object in a circular motion.
What is Revolution
300
The hottest planet. Called "Earth's Twin"
What is Venus
300
Region between Mars and Jupiter where the most asteroids orbit the sun.
What is asteroid belt
300
These stars have longer lives because of their size.
What is small stars
400
This causes the Earth's seasons.
What is the Earth's tilt.
400
When Russia launched Sputnik into space and the United States started trying to send things into space.
What is space race
400
The biggest planet.
What is Jupiter
400
This is the biggest type of star
What is Super Giant
500
This man invented the telescope.
What is Galileo?
500
This is the order of the planets.
What is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
500
A brief streak of light seen when an asteroid enters the Earth's atmosphere and burns up.
What is Meteor
500
This is what color the hottest stars are.
What is Blue