5.8 Review

Which device converts electrical energy to sound and light energy?

• flashlight

• radio alarm clock

• oven

• television remote control

Which device converts mechanical energy to electrical energy?

• microwave

• battery powered flashlight

• ceiling fan

• wind turbine powered generator

What type of energy transformation occurs while baking a cake?

• electrical to thermal

• mechanical to sound

• chemical to mechanical

• electrical to mechanical

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

NGSS.MS-PS3-4

What type of energy transformation occurs while using a battery powered mixer to mix cake batter?

• electrical to thermal

• mechanical to sound

• chemical to mechanical

• electrical to mechanical

Tags

NGSS.MS-PS3-5

What type of energy transformation occurs while eggs are whisked in a bowl while the fork taps the bowl?

• electrical to thermal

• mechanical to sound

• chemical to mechanical

• electrical to mechanical

A student uses a solar panel attached to a phone to convert electrical energy to light and sound energy. What is the source of energy that drives the energy transformation from electrical to light and sound energy?

• solar energy

• thermal energy

• chemical energy

• mechanical energy

What energy transformation occurs in a battery powered flashlight?

• electrical --> mechanical--> light

• mechanical--> light--> thermal

• thermal--> light--> sound

• chemical --> electrical --> light

How does the structure of a flashlight allow it to function as a light source that can be carried around?

• Flashlights must be charged by plugging them into a wall.

• Batteries allow the flashlight to be portable so it does not need to be plugged in.

• Flashlights are not portable, they must remain stationary.

• Electrical circuits must be open for a flashlight to be portable.

A student builds a circuit made up of a battery, two light bulbs, and a switch. What will the student most likely observe in this circuit?

• Light bulb 1 and light bulb 2 will both be on

• Light bulb 1 will be off, but light bulb 2 will be on

• Light bulb 1 and light bulb 2 will both be off

• Light bulb 1 will be on, but light bulb 2 will be off

The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut a the point shown by the arrow?

• 0

• 1

• 2

• 3

Tags

NGSS.3-PS2-3

NGSS.4-PS3-2