3rd grade science review part 2

Robert enjoys playing the guitar. He uses his fingers to strum and pluck the strings. The motion of the string causes the air around the guitar to vibrate.

• heat (thermal)

• light

• sound

• electrical

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NGSS.MS-PS4-1

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Which picture shows heat (thermal) energy causing a change?

• Hot corn melting butter.

• Making a sandwich.

• Putting icing and sprinkles on a cupcake.

• Cutting a pepper.

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Frank uses a bowling ball to demonstrate how energy can cause changes. Which of the following actions would NOT demonstrate a change caused by Frank applying energy to the ball?

• He holds the bowling ball in both hands.

• He spins the bowling ball with one hand.

• He rolls the bowling ball across the floor.

• He lifts the bowling ball to place it on a shelf.

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Which of the following is an example of electrical energy causing motion?

• A. A girl pushing the pedals of a bike to move forward.

• B. Loud music shaking a car.

• C. Hot air in a balloon pushing it up.

• D. A battery operated tooth brush spinning the bristles.

Tags

NGSS.4-PS3-1

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Jose was riding his bike around his neighborhood when he noticed something strange about the mailboxes on his street. The tops of many of the mailboxes looked faded and lighter in color. When he got home, he looked at his mailbox, which his mom just bought, he noticed it was not faded at all. What most likely explains why some of his neighbors' mailboxes were faded, but his mailbox was not?

• His neighbors bought the mailboxes already faded, and his mom bought one that was not faded.

• The energy from the sun caused his neighbors' mailboxes to fade over time, and since his mailbox was new, it was not faded yet.

• Something was probably rubbing the tops of all of his neighbors' mailboxes but not his mailbox.

• Sound energy from passing cars caused the paint on the top of the mailboxes to fall off, and since his mailbox was new, the paint has not fallen off yet.

Explain how you could use electricity to cause change or create motion in a useful way. (Describe how you use electricity to do things around the house or school.)

• By using electricity to power devices like fans and lights.

• By using water to clean surfaces.

• By using sunlight to heat rooms.

• By using wind to move objects.

A teacher takes the top and side off of a box. She cuts a hole in another side and puts a candle outside the box, as shown below. When the teacher lights the candle in a dark room, some of the candlelight shines through the hole. Which diagram best shows how the light appears on the opposite wall of the box?

• (diagram A)

• (diagram B)

• (diagram C)

• (diagram D)

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NGSS.4-PS3-2

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Which of these describes how light travels through empty space?

• It travels straight but may change direction to avoid objects.

• It changes direction often, even if there are no objects.

• It comes to a stop after it travels a certain distance.

• It travels in a straight line without stopping.

A ray of light hits a can of juice sitting on a table. Which picture shows what will happen to the ray of light?

• [Arrow bounces off can]

• [Arrow passes through can]

• [Arrow bounces off can in a different direction]

• [Arrow stops at can]

Tags

NGSS.MS-PS4-2

Jonah turns on a flashlight, and light comes out. How will the light move when it comes out of the flashlight?

• In a zigzag

• In a straight line

• Back and forth

• In a circle