Physical Science Unit 1 Lesson 2 Quiz

The picture shows a spring toy moving down steps. What happens to the energy of the toy?

• The potential energy of the toy is greatest while the toy is falling
• The kinetic energy of the toy is greatest when the toy is finish falling.
• Some kinetic energy of the toy changes to potential energy as the toy falls down the steps.
• Some of the potential energy of the toy changes to kinetic energy as the toy falls down the steps.

Rebecca is swinging on a playground swing. What is occurring at #1 of Rebecca’s swing.  

• Kinetic energy begins transforming into gravitational potential energy

• Kinetic energy is least

• Gravitational potential energy is greatest

• Some gravitational potential energy has been transformed to kinetic energy

A scientist performed an experiment during which she measured the energy transferred in each step of her experiment. The total quantity of energy transferred in all of the steps was less than the amount she measured at the beginning. What is the most likely explanation for this result?

• Energy was destroyed during certain steps in the experiment.
• The steps in the experiment required more energy than was available.
• The experiments created energy that was then used up at a faster rate.
• Some energy was transformed into unwanted heat or sound that was not detected.

Rebecca is swinging on a playground swing. What is occurring at #2 of Rebecca’s swing.  

• Some gravitational potential energy has been transformed to kinetic energy

• Kinetic energy begins transforming into gravitational potential energy

• Gravitational potential energy is greatest

• Kinetic energy is least

Rebecca is swinging on a playground swing. What is occurring at #3 of Rebecca’s swing.  

• Kinetic energy begins transforming into gravitational potential energy

• Kinetic energy is least

• Gravitational potential energy is greatest

• Some gravitational potential energy has been transformed to kinetic energy

What energy transformation takes place when a hair dryer is used?

• Energy from the sun is transformed to chemical energy
• Sound energy is transformed to thermal energy and electrical energy
• Electrical energy is transformed to thermal energy and sound energy
• Thermal energy is transformed to sound energy and mechanical energy

Some people use solar water heaters in their homes. A tank is attached on the roof, where the sun warms the water in the tank. Pipes transfer water from the tank to the taps (faucets) in the home. Which statement describes the energy transfer that occurs after the water in the tank is already heated and is used?

• Solar energy from the sun becomes thermal energy in the tank.
• Thermal energy becomes kinetic mechanical energy as the water moves through the pipes.
• Kinetic energy from the sun becomes potential energy when the tap is opened and warms as it moves.
• Gravitational potential energy becomes kinetic energy when the tap is opened and water moves through the pipes.

Billy throws a ball toward Suzy, who is holding a stick. Suzy decides to hold her stick motionless in front of the ball. The ball hits the stick with a loud “crack” sound. The ball bounces down to the ground and slowly rolls back towards Billy.

When Billy throws the ball, ___________ energy is transformed into kinetic energy.

• chemical potential
• gravitational potential
• thermal

Billy throws a ball toward Suzy, who is holding a stick. Suzy decides to hold her stick motionless in front of the ball. The ball hits the stick with a loud “crack” sound. The ball bounces down to the ground and slowly rolls back towards Billy.

The ball did not go as fast after it hit the stick because the ball transferred _______________ energy to the stick.

• elastic
• kinetic
• potential

Billy throws a ball toward Suzy, who is holding a stick. Suzy decides to hold her stick motionless in front of the ball. The ball hits the stick with a loud “crack” sound. The ball bounces down to the ground and slowly rolls back towards Billy.

Energy was ___________ from Billy, the ball, and the stick through heat, sound, and the air.

• created
• gained
• lost