Quarter 1 Review (Duplicate 02)

The diagram below represents the path of a ball after it has been thrown. Letters A, B, C, and D represent different locations in the path that the ball traveled. At which location did the ball have the greatest potential energy?

• A

• B

• C

• D

Gravity is the major force that

• keeps planets in their orbits

• affects melting of a solid

• keeps sunlight in Earth's atmosphere

• affects evaporation of water from oceans

The diagram below represents a roller coaster at two positions on the roller coaster track. Compared to the potential energy of the roller coaster at the top of hill 1, the potential energy of the roller coaster at the top of hill 2 is:

• less because the roller coaster is at a lower elevation

• less because the roller coaster is on a more gentle slope

• greater because the roller coaster is at a lower elevation

• greater because the roller coaster is on a more gentle slope

The plastic straws were placed under the wooden block to:

• decrease the mass of the block

• decrease the amount of friction

• increase the surface area of the ramp

• increase the gravitational attraction of the block

The Law of Conservation of Energy states that energy cannot be created or destroyed, but energy can change

• its total mass

• its total volume

• from one form to another

• from one state of matter to another

A child is sitting in a sled at the top a snowy hill. Which statement is true regarding the position of the child?

• The child has no potential energy.

• The energy is changing from potential to kinetic.

• The energy is changing from kinetic to potential.

• The child has only potential energy.

As Henry is exercising, he pushes against a beam with a force of 25 newtons. The beam does not move. Which statement is true?

• The beam exerts less than 25 newtons of force against Henry.

• The beam exerts a force of 25 newtons against Henry.

• The beam exerts more than 25 newtons of force against Henry.

• The beam does not exert any force against Henry.

If two objects have a strong gravitational attraction even though they are not very close together, it is likely that they have

• large volumes

• high pressures

• large masses

• high temperatures

Which statement is true about objects that are at rest (not moving)?

• Objects at rest will not move unless a force acts on them.

• Very light objects begin to move without a force acting on them.

• Objects at rest move unless an outside force holds them in place.

• Very heavy objects will not move even when a very strong force acts on them.

A force that resists or works against motion is

• gravity

• destructive

• friction

• power