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

Tags

NGSS.MS-PS3-1

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

• condition
• mass
• color
• speed

Tags

NGSS.MS-PS3-1

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

Tags

NGSS.MS-PS3-2

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

Tags

NGSS.MS-PS3-2

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

• kinetic energy
• potential energy

Tags

NGSS.MS-PS3-4

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

• kinetic energy
• potential energy

Tags

NGSS.HS-PS1-2

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

Rain falls from clouds onto the ground, and it collects into streams. The streams flow down into the reservoir behind a hydroelectric dam. The dam releases the water through a turbine that empties into a river. The river flows into the ocean. What is the location with the most potential energy? Assume that the amount of water in each location is the same.

• in the ocean
• in the clouds
• in the reservoir
• entering the river from the reservoir
• in the streams that flow into the reservoir

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4