Quiz 1 for Energy

Which of the following best describes the transformation of food into energy as pictured in the image to the right? 7.P.11.2

• chemical to mechanical

• chemical to potential

• mechanical to chemical

• thermal to mechanical

As a rollercoaster travels upward what type of energy transfer is taking place? 7.P.11.2

• electrical to thermal energy

• kinetic to potential energy

• mechanical to chemical energy

• otential to kinetic energy

Jorge and his friends are making a cellphone video of their ballgame at the park.  Since Jorge’s phone is utilizing the battery, which situation below best describes the energy transformation Jorge’s cellphone is experiencing? 7.P.11.2

• chemical energy to light, sound and thermal energy

• Light energy to chemical, sound and chemical energy

• electrical energy to light, sound and chemical energy

• chemical energy to light, sound and mechanical energy

What happens to the kinetic energy and gravitational potential energy of a ball during free fall? 7.P.11.2

• gravitational potential energy and kinetic energy both decrease

• gravitational potential energy and kinetic energy both increase

• gravitational potential energy decreases, and kinetic energy increases

• gravitational potential energy increases, and kinetic energy decreases

Janet plugs in her cellphone before she goes to bed.  Which of the following best describes the energy transformation that is happening as the phone charges? 7.P.11.2

• Chemical Energy to Electrical Energy

•       Chemical Energy to Thermal Energy

• Electrical Energy to Chemical Energy

• Electrical Energy to Thermal Energy

When a rubber ball bounces against a hard surface, it will bounce and follow a pattern similar to the picture below.  Which answer choice best explains the energy transformation occurring in this system? 7.P.11.2

•     When the ball is dropped, it has high kinetic energy and low potential energy.  As it falls, the kinetic energy transforms into potential energy.  Some energy is destroyed in the bounce, resulting in a shorter bounce each time.

• When the ball is dropped, it has high potential energy and low kinetic energy.  As it falls, the potential energy transforms into kinetic energy.  Some energy is also transformed into sound and thermal energy, resulting in a shorter bounce each time. 

• When the ball is dropped, it has high potential energy and low kinetic energy.  As it falls, the potential energy transforms into kinetic energy.  Some energy is destroyed in the bounce, resulting in a shorter bounce each time.

7. The bicycle rider ate breakfast before the ride. Which of the following energy transformations occurred during the bike ride? 7.P.11.2

• Kinetic energy to chemical energy

• Chemical energy to kinetic energy

• Kinetic energy to nuclear energy

• Nuclear energy to kinetic energy

What is the sequence of the energy transformation represented in the diagram to the right? 7.P.11.2

• mechanical → chemical → solar

• solar → electrical → mechanical

• mechanical → electrical → solar

• solar → chemical → electrical

When you swing a bat and hit a baseball, the ball flies into the outfield. What happens to the energy you used to swing the bat? 7.P.11.2

• The energy from the bat is added to the gravitational potential energy of the ball thus creating energy

• Most of the energy is transferred to the baseball as kinetic energy, but some energy is destroyed.

• Most of the energy is transferred to the baseball as kinetic energy, but some energy is transformed into heat and sound energy.

• It is converted into potential energy.

What is the energy transfer that takes place in a light bulb? 7.P.11.2

• A. Chemical to light energy

• Chemical energy to heat energy

• Electrical energy to light energy

• Electrical energy to chemical energy