4th Energy Checkpoint

Students in a fourth grade class stuck a magnet to a chair leg. Then they taped a paper clip on a string to the floor. They observed the paper clip as shown in the picture. When they removed the magnet, the paper clip fell to the floor. Explain why the paper clip floated in the air, and why it later fell to the floor.

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Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student wants to complete this circuit so the motor will run. She has only a few materials available. What can she use to close the circuit between the D-cell and the switch? (Mark the one best answer.)

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Tags

NGSS.MS-ETS1-2

Use what you know and what you see in the pictures as evidence for your answers below. Check each statement that is supported by evidence in the pictures.

• The material in the circle could be small pieces of iron.
• The material in the circle could be small pieces of sawdust.
• The material in the circle could be small pieces of copper.
• The nail in picture 1 must be a magnet.
• The nail in picture 2 must be a magnet.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student rides a snowboard down a hill. She starts at position 1 and stops at position 4. Which statement best explains when the snowboarder had the most kinetic energy? (Mark the one best answer.)

• Position 1, because that is when the snowboarder has the farthest to fall
• Position 2, because that is when the hill is the steepest
• Position 3, because that is when the snowboarder goes the fastest
• Position 4, because that is the bottom of the hill

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Students rolled small, medium, and large balls down a ramp from different positions. The ball hit a block at the bottom of the ramp. They measured how far the block moved. The chart shows the data they recorded. Write a hypothesis based on evidence from the table for how height and mass affect how far a ball will push a block.

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Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

People can make toast right on a stove burner with a device like you see in the first picture. Energy stored in gas is released in the flame and transfers to the bread. Which scientific idea is used in the design of an electric toaster? (Mark the one best answer.)

• Energy stored in electric wires is released as heat.
• Energy flowing through the wires is released as heat.
• Heat stored in the wires transfers to the bread.
• Heat flowing through the wires transfers to the bread.

Tags

NGSS.MS-PS3-3

After a picnic, a child washed some plastic cups and put one inside the other. The cups stuck together. Someone said, "Wow! The cups are magnetic!" Which of the following statements could be supported by evidence from class investigations? (Mark the one best answer.)

• That's right. Sometimes plastic can become magnetized.
• That's right. Whenever things stick together, that's magnetism.
• No, that's wrong. Only metal can be magnetized.
• No, that's wrong. Sometimes wet things stick together.

Which question was this student testing? (Mark the one best answer.)

• How many paper clips can you pick up with a magnet?
• How many trials are needed to pick up the most paper clips?
• How does the strength of magnetism change as the number of magnets increases?
• How can you find the average number of paper clips picked up by a magnet?

Tags

NGSS.3-PS2-3

What conclusion can be drawn from the data in the table? (Mark the one best answer.)

• The average number of paper clips one magnet can pick up is nine.
• The more magnets you use, the fewer paper clips you can pick up.
• You can't come to a conclusion; something is wrong because the student should have gotten the same number of paper clips for each trial.
• The more magnets you use, the stronger the force of magnetism.

Tags

NGSS.MS-PS2-3

Use the data in the table to make a prediction. How many paper clips will six magnets pick up if the pattern continues? (Mark the one best answer.)

• 33
• 35
• 64
• 42