Vocabulary
This is the attractive force between all objects in the universe.
What is gravity?
These objects in the universe have gravity.
What is anything with mass?
The scientist who thought the sun is in the center of the universe.
Who is Copernicus?
As the mass increases, the Force of Gravity _______.
Increases
Which planet has a storm that is three times the size of earth?
Jupiter
A measure of the amount of matter in an object.
What is mass?
Why does the Earth have more gravity than our moon?
Because the Earth has more mass. More mass = more gravity.
This astronomer thought the Earth was in the middle of the universe.
Who is Aristotle?
As the distance increases, the force of gravity ________.
What is decreases.
Which planet rotates at a 90-degree angle?
Uranus.
A measure of the gravitational force exerted on an object.
What is weight?
Would you have more mass on the Earth or floating in space?
Your mass is the same anywhere you are in the universe.
Earth and the other planets closest to the Sun are made mostly of _______.
What is rock?
Gravity is always a pushing/pulling force. (Pick one)
Pulling
Who developed the mathematical law of gravitation that allows us to measure gravity?
Isaac Newton
A large body in space that orbits a star and does not produce light on its own
What is a planet?
What two properties determine the strength of gravity?
What is distance between two objects and mass between two objects?
These outer planets have rings.
Jupiter, Saturn, Uranus, Neptune.
Why do astronauts bounce and appear to float on the moon as they walk?
Gravity is weaker on the moon.
What is the most massive object in any solar system? What is the scientific name for it in our solar system?
The star. In our case, the sun (sol).
The metric system (SI unit) of weight.
What is a Newton?
How might your mass change over time?
When you grow, your mass increases because your body takes up more space.
These planets are spaced closer together than the rest of the planets.
Mercury, Venus, Earth, Mars
What happens to the orbital period of planets as the distance for the sun increases?
As planets get further away from the sun the orbital period increases. For example, mercury is the cloest planet from the sun with an orbital period of 88 days while, Neptune is the furthest planet from the sun with an orbital period of 165 years.
Explain what a habitable zone is in a solar system. Explain what we can expect from planets out of this zone (in front of and behind)
The habitable zone is where liquid water can exist on a planet's surface. Planets in front of this zone are too close to the star and too hot, and planets behind this zone are too far and too cold for liquid water to exist on the surface.