Energy CBA Review

Which change to the circuit below will cause the bulb to light up?

A tv uses electrical energy and transfers it into which 2 kinds of energy?

Which of the following devices is designed to change (convert) mechanical energy into sound energy?

Lin did an experiment to test force on a toy car rolling down a ramp.What force caused the increased time on the carpet?

Look at the circuit in the picture. What would happen if Switch 1 is opened?

A metal spoon and a wooden spoon were put into a beaker of hot water. The metal spoon got hot but the wooden one did not

The picture shows the an electrical cord for a toaster. Why does the cord have both copper and plastic?

Jenna and her friends went to a concert. Which type of energy allowed them to hear the music?

Students said that a tennis ball would bounce higher than a golf ball. They did one test but the golf ball went higher

Which appliance coverts electrical energy to mechanical energy?

The girl in the picture is using an electrical appliance that has a motor. Which energy conversion is taking place?

The class poured 90° water in 3 cups and let it sit for 30 min. They recorded the beginning and ending temp. of each cup

The picture shows an electric circuit. It has a battery, wire, switch and lightbulb. What is the role of the wire?

Mark puts a cold pat of butter on hot toasted bread. The butter melts. Which explains why the butter melted?

Which energy change (conversion) takes place when Sam plugs a radio into an electrical outlet?

I put a metal and a wooden spoon in a beaker of 70° water and put it on a hot plate.

Jeffrey is making a poster about conductors and insulators. Which of the following objects should he list as a conductor

How does energy from both the sun and a campfire provide light and thermal energy?

Darnell wants to show that electricity flows in a closed path. What is the purpose of the battery in the circuit?

On a warm sunny day, a lizard sits on a rock. He is using ______ energy from the sun to stay warm