Vocabulary
This is the attractive force between all objects in the universe.
What is gravity?
This changes depending on what planet you are on.
What is weight?
These objects in the universe have gravity.
What is everything?
If the distance between two objects is constant and you increase the mass of both objects, what happens to the gravitational force between them?
What is increases?
Since molecules of air are so small, do they have gravity? Why?
What is yes? Everything that has mass has a gravitiational force. Although air is very light, it still has mass.
The repeating path that one object in space makes around another.
What is orbit?
This stays the same no matter where you are in the universe.
What is mass?
Why does the Earth have a stronger gravitational force than our moon?
Because the Earth has more mass. More mass = more gravity.
If the mass of two objects are constant and you increase the distance between then, what happens to the gravitational force between them?
What is decrease?
Gravity and magnetism act the same way. Are gravity and magnetism the same thing?
What is no?
This is how much matter, or particle is in an object.
What is mass?
Find the weight of a 60 kg astronaut on earth. earth gravity is 10N
600N
Would you have more mass on the Earth or floating in space? Why?
What is neither? Your mass is the same anywhere you are in the universe.
This is caused by the Moon's gravity pulling water towards it.
What are tides?
What two properties determine the strength of gravity?
1) Mass of an object 2) Distance between the center of two objects
This is the measure of how strong the force of gravity pulls on an object.
What is weight?
What would happen if you stood on a planet that was 500x the mass of the Earth?
Your body would crush under the immense gravity.
On Earth, why can't we observe the gravitational force between two cars or two pencils?
Because the mass of a car and a pencil are too small in comparison to the mass of Earth.
What role did gravity play in the formation of the planets?
A.Gravity caused rocky particles to collide and form a larger body, which became the earth
B. Gravity caused rocky particles to rotate and form a moon, which became the earth.
C. Gravity caused the earth to collapse toward the center, causing the center to be dense
D. Gravity caused the earth to burst toward the center, causing the outer ring to be dense and cold
A
If Earth is 93 million miles away from the sun and Neptune is 2.8 billion miles away from the sun, which planet is less attracted to the sun and why?
What is the Neptune because it is significantly farther. The farther the objects are, the more lesss attracted they are to each other.
The part of an object where gravity pulls towards.
What is the center
How might your mass change over time?
When you grow/eat/develop, your mass increases because your body has more "stuff".
What happens to the strength of gravity the further you are from an object's center?
It get's weaker
Use Newton first law of motion to explain a pencil sitting on a desk
It will stay in the same position until moved by an external force
When you jump into the air, the force of Earth’s gravity pulls you back down no matter how high, or where on Earth you jump. Which statement explains where and how Earth’s gravity pulls on objects?
A. Earth’s gravity acts from Earth’s center and stops at Earth’s surface.
B. Earth’s gravity tries to pull every object from one side of the planet to the other.
C. Earth’s gravity acts from the surface of Earth to pull everything in the air down.
D. Earth’s center of gravity is the center of Earth, and gravity pulls downward toward that center from all sides of the planet.
D