PS UNIT 1 Test

Front

What happens to the energy of the cart as it moves from point A to point B on the diagram?

Back

Potential energy is transformed to kinetic energy.

Front

Rebecca drops a rubber ball from a height of 2 meters. It bounces back up to a height of 1.5 meters. Which statement best explains what happened to the ball's energy?

Back

Some of the ball's energy was transferred to the ground as heat and sound.

Front

Which diagram models the position of a soccer ball when it has the greatest amount of gravitational potential energy? Options: Option A, Option B, Option C, Option D

Back

Option C

Front

Which statement describes the energy transformations and transfers that are occurring when a wind-up music box plays? Options: Electrical energy is generated by the crank as it turns. The pins transform the electrical energy into sound energy., Sound energy is transferred through the crank to the cylinder and pins. The pins transform the sound energy to electrical energy., Sound energy is transferred through the crank to the cylinder and pins. The pins transform the sound energy to mechanical energy., Kinetic energy is transferred through the crank to the cylinder and pins. The pins transform the kinetic energy to sound energy.

Back

Kinetic energy is transferred through the crank to the cylinder and pins. The pins transform the kinetic energy to sound energy.

Front

Which of these describes the relationship between the rocket’s speed and its kinetic energy? Options: There is no relationship between speed and kinetic energy., There is a nonlinear relationship between speed and kinetic energy., There is a linear relationship between speed and kinetic energy., There is a constant relationship between speed and kinetic energy.

Back

There is a nonlinear relationship between speed and kinetic energy.

Front

Based on the data in the table, which of these could be the potential energy of Car 2 at the top of the hill? Options: 6 joules, 10 joules, 12 joules, 15 joules

Back

15 joules

Front

In the classroom demonstration shown below, a rubber ball is dropped from Position 1. The ball bounces as shown. At which of these positions does the ball have both the greatest kinetic energy and the least potential energy? Options: Position 1, Position 2, Position 3, Position 4

Back

Position 2

Front

The drawing shows two identical airplanes at an air show. The airplanes are flying at the same speed. Airplane W is flying 50 m higher than Airplane X. Which statement best describes the energy of the two airplanes?

Back

The two airplanes have the same kinetic energy but different gravitational potential energies.

Front

The 1. ___________ energy of the wind is transferred to

Back

kinetic

Front

transferred to 2. ____________. Options: wind, grains, blades, gears and shaft, top wheel

Back

blades