Forms and Interactions of Energy

Which of the following items transfers electrical energy into sound energy? (P3.1)

• lamp

• doorbell

• calculator

• candle

Carly put her pencil in a cup of water. Now her pencil looks like it is broken. Which best explains why Carly’s pencil looks broken? (P3.2)

• Light is reflected.

• Light is refracted.

• Light is absorbed.

• Light is bright.

The picture below shows a tree near a lake. Ilan sees a mirror image of the tree in the water of the lake. What causes this mirror image? (P3.2)

• black light

• refracted light

• reflected light

• absorbed light

Tags

NGSS.MS-PS4-2

Which of the following items transfers electrical energy into light and heat energy? (P3.1)

• power plant

• connecting wires

• fan

• light bulb

Which best explains how light travels in a straight line? (P3.2)

• Light waves don’t travel in a straight line.

• Light waves travel in a straight line because sound waves travel in a straight line.

• Light waves will always travel in a straight line, even if they strike an object or travel from one medium to another.

• Light waves will travel in a straight line if they do not interact with an object.

Why is sound a form of energy? (P3.1)

• Sound waves carry energy that can cause motion or create change.

• Sound and energy are not related.

• Energy is present only in loud sounds.

• Energy is present only in high-pitched sounds but not in low-pitched

  sounds.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Energy is changed from one form to another during an energy transfer. Which of the following examples describe the transfer of electrical energy into another form of energy? (P3.1)

• A motor making noise.

• A heater that feels warm.

• A light bulb lighting up.

• All of these examples describe a transfer of energy.

Heat and magnetism are two forms of _____ because they can cause change or create motion.

• matter

• energy

• solids

• animals

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When light strikes an object or travels from one medium to another, it can be reflected, refracted, or _____ .

• melted

• evaporated

• absorbed

• grouped

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which of the following statements does not correctly describe energy? (P3.1)

• Energy can be touched.

• Energy can be changed or transferred from one form to another.

• Forms of energy can be grouped based on interactions with matter.

• Energy can make things change or move.

Tags

NGSS.MS-PS3-5