Energy Transfer

When the lamp is turned on, which of these statements is true about the light bulb?

• It makes noise.

• It gives off light and heat.

• It is magnetic and gives off heat.

• It works without using any electricity.

Karla has a fish tank in her bedroom. She accidentally leaves the fish tank light on overnight. Which of these is most likely to happen to the temperature of the water?

• The temperature will increase because the water makes light and heat.

• The temperature will increase because the light bulb gives off light and heat.

• The temperature will decrease because the light bulb gives off light, but takes in heat.

• The temperature will stay the same because the light bulb gives off light, but not heat.

Tags

CCSS.RI.3.3

Electrical energy is needed to power a light bulb. A light bulb uses a lot of energy because, in addition to light, it produces another type of energy. Which other type of energy does a light bulb produce?

• heat energy

• sound energy

• electrical energy

• mechanical energy

Which of the following statements best describes things that give off light?

• Things that make light are also heavy.

• Things that make light also make heat.

• Things that make light also make sounds.

• Things that make light also make a lot of movement.

A student rubs her hands together on a cold winter day. How is the heat that warms her hands made?

• The heat is made by magnetism

• The heat is made by friction

• The heat is made by gravity

• The heat is made by light

A janitor is sanding a wood floor with sandpaper. The paper rubs on the wood very hard. What would you expect to feel if you touched the sandpaper right after the janitor stopped sanding?

• The sandpaper would feel hot.

• The sandpaper would feel sticky.

• The sandpaper would feel sharp.

• The sandpaper would feel greasy.

To demonstrate friction in a classroom, Mrs. Allen asked students to rub their hands together very quickly for 10 seconds. When the students stopped, what did they all most likely notice about their hands?

• Their hands felt hot.

• Their hands felt rough.

• Their hands felt cooler.

• Their hands felt the same.

Tags

CCSS.RI.3.3

How did the fire stick work to make fire?

• It attracted lightning.

• It made sawdust to sprinkle in the fire.

• The stick rubbed on the lower board and made heat.

• The stick dug chemicals, like in matches, out of the wood.

Tags

CCSS.RI.3.7

CCSS.RI.3.1

What does friction cause?

• It makes things speed up.

• It makes things slow down or stop.

• It make things fall to the ground.

Without friction a toy car would ----

• keep going and going.

• stop right away.

• stay at rest all the time.

Tags

CCSS.RI.3.1