Energy and Vibrations Flashcard

Front

Why did Sarah feel water on her hand when Mr. Lee hit a metal spoon on the edge of a glass and then dipped it into a bowl of water?

Back

The spoon’s vibrations made the water splash out of the bowl.

Front

Why did the boat move when placed in a stream of water from a hose?

Back

Mechanical energy from the moving water is transferred to the boat, causing it to move.

Front

During a science experiment, Maria uses an electric kettle to boil water. As the water heats up, the molecules begin to move faster. Which sequence correctly shows the energy conversions taking place?

Back

Electrical → thermal → mechanical

Front

What is the most likely effect of heating a metal spoon over a stove flame?

Back

The spoon will get very hot.

Front

What type of energy transfer causes a soccer ball to move when kicked across a grassy field?

Back

Mechanical energy from the foot is transferred to the ball.

Front

What is the most likely result of placing an ice cube on a warm metal tray?

Back

The ice cube will melt as heat transfers from the tray.

Front

During a science demonstration, a lamp is turned on and heats up a metal rod placed nearby. Which sequence best describes the energy conversions involved?

Back

Electrical → light → thermal