2.1 Changing Directions Practice Test

_______________________ a string or bar that is loose at one end but fixed at the other and can rotate or swing around the fixed point.

• Pendulum
• Motion
• Mass
• Force

How do you know if a force is balanced?

• the object is moving
• the forces are not the same
• the sky is blue
• the object is not moving

__________________________ the force of attraction between two masses.

• Inertia
• Gravitation
• Motion
• Force

The reason that our egg fell into the cup during the science experiment was because there was no gravity.

• True
• False

____________________ a force that exists between any two objects that have mass.

• Inertia
• Gravity
• Motion
• Force

What force makes a baseball continuously curve downward after it has been thrown?

• the throw
• falling
• flying
• gravity

________________ a change in the position of an object compared to another object.

• Inertia
• Pendulum
• Motion
• Mass

The force of gravity on Earth always pushes objects away from Earth’s surface.

• True
• False

When you observe patterns, you can then look at how forces that act on an object will change that pattern.

• True
• False

Select the balanced force.

• a ball rolling down a hill
• a car sitting still
• a skater skating
• a baseball being hit