Unit 3 Quiz- HMH

1. Neena and Indira are conducting an investigation with magnets. Neena holds one magnet and Indira holds another. Then they put the magnets close to each other in different ways to see what will happen. Which pictures show the magnets that will ATTRACT each other. Check all of the boxes that apply.

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NGSS.3-PS2-3

2. Neena and Indira are conducting an investigation with magnets. Neena holds one magnet and Indira holds another. Then they put the magnets close to each other in different ways to see what will happen. Which pictures show the magnets that will REPEL each other. Check all of the boxes that apply.

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Tags

NGSS.3-PS2-3

3. Xen is conducting an investigation to explore forces using the set-up below. Which forces is Xen investigating? Select TWO correct answers.

• Friction
• Gravity
• Velocity
• Magnetism
• Acceleration

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NGSS.3-PS2-1

NGSS.5-PS2-1

4. Lukas conducted an investigation to explore patterns in forces in contact on an object. The table shows the distances and times that the ball rolled during his investigation. For each trial, the ball started from rest and a force caused it to move across a smooth surface. Identify patterns in the data to explain how the ball moved. During which trial did the GREATEST amount of force cause the ball to move?

• Trial 1
• Trial 2
• Trial 3
• Trial 4

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

This question has two parts. First, answer Part A. Then answer Part B.

Maribel is conducting an investigation on the patterns of forces at a distance on a paper clip. She ties a paper clip to a string and tapes it to her desk. She holds a bar magnet over the paper clip and moves it closer to the paper clip and then moves it farther away again. The results of her investigation are shown in this series of pictures.

Part A Which statement BEST explains what is happening in Steps 3 and 4 of Maribel’s investigation?

• In Step 3, the paper clip is pushing away from the table. In Step 4, the table is pulling on the paper clip.
• In Step 3, the string is holding up the paper clip. In Step 4, the string can no longer hold up the paper clip so it falls to the table.
• In Step 3, the magnet is pulling the paper clip up so that it appears to be floating. In Step 4, the paper clip has fallen back down to the table.
• In Step 3, the magnet is pushing on the paper clip so it appears to be floating. In Step 4, the magnet has pushed the paper clip back to the table.

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NGSS.3-PS2-1

NGSS.3-PS2-2

NGSS.3-PS2-3

6. Part B Which statement BEST supports the answer to Part A?

• The force of gravity is stronger than the force of the magnet so the paper clip falls to the table.
• The force of the magnet is stronger than the force of gravity so the paper clip falls to the table.
• The force of the table is stronger than the force of the paper clip so the paper clip falls to the table.
• The force of the string is stronger than the force of the paper clip so the paper clip falls to the table.

Tags

NGSS.3-PS2-1

NGSS.3-PS2-3

NGSS.5-PS2-1

7. Astronauts plan an investigation to explore the patterns of force on an object. They know that they will experience one of the forces less on the moon. Which force are the astronauts investigating?

• applied
• friction
• gravity
• magnetism

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NGSS.MS-PS2-4

8. Lonny and Aaron are planning an investigation to explore the patterns of forces on a ball. They will roll the same ball on three different surfaces to find out on which surface the ball will roll the farthest. Which tool will they need for their investigation?

• magnet
• magnifying glass
• meterstick
• stopwatch

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

9. Kamal conducted an investigation where he placed magnets on a wooden stand. Kamal observes that when he stacks the magnets one way, they pull together. When they are stacked in a different way, they push apart from each other. How can Kamal position the magnets in the stack so they will all push apart from each other? Identify the pattern that explains how the magnets can push APART from each other.

• Magnet A on top, Magnet B on bottom
• Magnet B on top, Magnet A on bottom

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NGSS.3-PS2-3

NGSS.3-PS2-4

10. Lin conducted an investigation to explore the effects of forces on a toy cart that rolls down a long ramp. She covered the ramp with different materials and used the same toy cart and ramp for each surface type. The table shows the time she measured for each material. Analyze the data. Which pattern explains the data Lin gathered?

• The force of gravity caused the cart's time to increase on the foil.
• The force of friction caused the cart's time to increase on the foil.
• The force of gravity caused the cart's time to increase on the carpet.
• The force of friction caused the cart's time to increase on the carpet.

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2