Unit 1: Intro to Energy Lesson 1 Test

Which of these has the most kinetic energy?

• a 25 kg fish tank sitting on a table
• a 50 g fish swimming in a fish tank
• a 7,500 kg car parked on a steep hill
• a 50 kg boulder suspended from a cliff

The amount of kinetic energy depends on the object's speed and _________.

• condition
• mass
• color
• speed

The diagram shows the curved path of a thrown ball. At which point does the ball have the greatest amount of gravitational potential energy?

• W
• X
• Y
• Z

A seabird builds its nest on a ledge above the ocean, where it fishes for food. When does the bird have the most potential energy?

• flying at 10 m/s 10 m above the ocean
• sitting in its nest 20 m above the ocean
• swimming on the ocean surface at 2 m/s
• diving for fish 3 m below the ocean surface

Is the following kinetic or potential energy? thermal energy of the warm toast

• kinetic energy
• potential energy

Is the following kinetic or potential energy? chemical energy stored in the bread

• kinetic energy
• potential energy

Is the following kinetic or potential energy? electrical energy flowing from the plug in the wall

• kinetic energy
• potential energy

Is the following kinetic or potential energy? elastic energy of the spring in the toaster when the handle is pressed down

• kinetic energy
• potential energy

Is the following kinetic or potential energy? electromagnetic energy of the infrared light coming off of the toaster’s heating element

• kinetic energy
• potential energy

Is the following kinetic or potential energy? magnetic energy attracting the piece of metal on the handle that holds the bread in the toaster

• kinetic energy
• potential energy