Physical Science Energy Test

Energy is measured in what unit?

• Newtons

• Joules

• Watts

• acceleration

What energy conversion takes place in the image?

• Nuclear to light

• light to electrical

• electrical to mechanical

• mechanical to thermal

What type of energy conversion takes place in the image?

• Chemical to light

• Mechanical to thermal

• Thermal to nuclear

• Sound to electrical

Which of the following is an example of nuclear energy?

• Water spinning a turbine

• The sun fusing hydrogen atoms

• Paper burning

• Drum vibrations making sound

Identify the energy chain that is shown in the image.

• Chemical → Electrical → Light

• Electrical → Thermal → Light

• Electrical → Mechanical → Thermal

• Nuclear → Chemical → Light

A 10kg bag sits atop a 15m ladder. How much potential energy does the bag have?

• 150J

• 1,470J

• .07J

• 147J

A 10kg bag rests atop a 15m ladder. Determine the kinetic energy of the bag.

• 0J

• 150J

• 2,250J

• 1,470J

Which of the following variables is not necessary to calculate potential energy?

• Gravity

• Height

• Mass

• Velocity

Which of the following variables has the greatest impact on kinetic energy?

• Mass

• Height

• Velocity

• Gravity

A ball is placed at the top of each tower in the picture. Which ball will have the greatest potential energy?

• The ball on the tallest tower.

• The ball on the shortest tower.

• All of the balls will have the same potential energy.

• There is not enough information to answer the question.