Energy Review

Which form of energy is due to the motion of an object's particles?

• thermal energy

• chemical energy

• mechanical energy

• electromagnetic energy

Cam throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. When does the kinetic energy convert to potential energy?

• When the ball is falling

• when the ball is rising

• while the baseball sits on the ground

• while the baseball is stopped in the air

Which describes energy and work?

• only work is measured in joules

• work is a measure of how much energy a force transfers

• energy remains constant when work is done

• when work is done on an object, no energy is transferred

Which form of energy is stored in food?

• sound energy

• chemical energy

• mechanical energy

• electromagnetic energy

Jared lifts a box of oranges from the ground to over his head. How was the energy transferred?

• energy is transferred from Jared to the box

• energy is transferred from the box to Jared

• energy is transferred from the ground to Jared

• energy disappears into the abyss

Three rocks are rolling down a hill at the same speed. Rock 1 has a mass of 1 kg; rock 2 has a mass of 1.5 kg, and rock 3 has a mass of 3 kg. Which rock has the most kinetic energy?

• rock 1

• rock 2

• rock 3

• Rocks? Science Rocks!!

Which form of energy is equal to the sum of an object's kinetic and potential energy?

• nuclear

• electrical

• chemical

• mechanical

Kate throws a softball to her dad. He catches the ball in his mitt. Which describes the transfer of energy that occurred?

• Energy is transferred from the mitt to the ball

• Energy is transferred from the ball to Kate's arm

• Energy is transferred from Kate's arm to her dad's mitt

• This is confusing! I need help

An owl builds its nest on a ledge above a giant oak tree, where it ponders physical laws of the universe. The owl would have the most potential energy when________.

• flying at 10 m/s 1 m above the forest

• sitting in its nest 100 m above above the forest

• hiding in a burrow 10 m above the ground

• diving for a mouse at 2 m/s 10 m above the ground

George is standing next to Owen. The next thing we know, they are in a scuffle. George pulls on Owen's arm. What occurs?

• George exerts a force on Owen, and a force is exerted on George by Owen.

• No forces were exerted.

• Owen does not exert a force on George, but George exerts a force on Owen.

• George and Owen get scolded by Mr. G for not maintaining appropriate social distance in class.