Gravity Assessment

What are the two factors that affect the strength of the gravitational force between two objects?

• mass of the objects

• distance between the objects

• temperature of the objects

• speed of the objects

What happens to the amount of gravity between two objects as their distance increases?

• The amount of gravity decreases.

• The amount of gravity increases.

• The amount of gravity stays the same.

What happens to the amount of gravity between two objects as their mass increases?

• The amount of gravity decreases.

• The amount of gravity increases.

• The amount of gravity stays the same.

When an asteroid gets caught in a planet's gravity, what happens to the asteroid's speed as it gets closer to the planet?

• The speed of the asteroid increases.

• The speed of the asteroid decreases.

• The speed of the asteroid stays the same.

When an asteroid gets caught in a planet's gravity, what happens to the gravity between the two objects as the asteroid gets closer to the planet?

• The gravity between the two objects increases.

• The gravity between the two objects decreases.

• The gravity between the two objects stays the same.

When an asteroid is traveling toward a planet but aimed to miss the planet, what will happen to the path of the asteroid as it nears the planet?

• The asteroid's path will curve toward the planet.

• The asteroid's path will curve away from the planet.

• The asteroid will continue in a straight line toward the planet.

• The asteroid will continue in a straight line and miss the planet.

A ball is dropped from about two meters off the ground. The dots in the picture show the ball's position during each frame of the fall. What are the dots showing about how gravity affects falling objects? Be specific and complete in your response.

This graph shows an object falling. The y-axis is the object's distance off the ground in pixels of the picture. The x-axis shows the time it took the object to fall in tenths of a second. The red dots show that the object fell straight down without moving from side to side. What do the blue dots tell you about how the object fell? Explain how the graph shows this.

Tags

CCSS.8.EE.B.5

A marble and a baseball are dropped from two meters. Air resistance will not factor into these objects when they fall. Use what you know about gravity to indicate how they would land.

• They will both land at the same time.

• The marble would land first.

• The baseball would land first.

Which choice explains why water in a cup stops falling out of the holes of the cup when the cup is falling?

• The water and the cup fall at the same time so the water can't fall out the holes.

• The air on the outside of the cup is holding the water in.

• Gravity is pushing the water up from the bottom of the cup to keep it from falling out.

• The water has more mass than the cup so it falls faster than the cup and pushes the cup down as it falls.