Big Idea 13

To move the heavy box shown, Kylie and her friends lifted it onto a cart with wheels. Why was it easier to move the box by placing it on wheels than by sliding it?

• There was less mass.

• There was less friction.

• There was less density.

• There was less gravity.

Iron filings and bar magnets were placed on a sheet of paper. The diagram shows the pattern made on the paper due to a magnetic force.

• 1

• 2

• 3

• 4

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To decide if plants grow better with fertilizer, a student could start growing plants and

• give them a large amount of fertilizer.

• water them and then give them fertilizer.

• give fertilizer to some plants but not to others.

• give them fertilizer and large amounts of sunlight.

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A ball is sitting loose on a flat wagon that is going in the direction of the arrow. If the wagon suddenly stops, the ball will

• also suddenly stop

• roll forward in the wagon towards the handle

• roll backward in the wagon away from the handle

• bounce up and down

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NGSS.MS-PS2-1

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You are pushing a box. The force is shown with an arrow. The box does not move. What keeps the box from moving even though you are pushing on it?

• You are pushing the box in the wrong direction.

• There is too much air resistance to move the box.

• The force of friction is opposing the force you exert.

• The force of gravity is opposing the force you exert.

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NGSS.MS-PS2-2

Ben put different masses on each of the carts. He then launched each cart from the same starting point using the same amount of force. Ben measured how far each cart rolled from the starting point.How will the force of the launch affect the carts?

• Cart 3 will travel the longest distance.

• Cart 1 will travel the shortest distance.

• Cart 3 will have the least change in its motion.

• Cart 1 will have the greatest change in its motion.

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NGSS.MS-PS2-2

Felipe and Marsha were studying friction and decided to do an experiment. They place four equally sized blocks made of different materials on an elevated plastic tray. They watched the blocks move down the tray. Which block would experience the least amount of friction as it moved down the tray?

• ice block

• sponge block

• sandpaper block

• plastic block

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NGSS.MS-PS2-2

The graph shows how much a plant grew over 4 days.

According to the graph, how many centimeters did the plant grow between Day 1 and Day 4?

• 15 cm

• 12 cm

• 21 cm

• 72 cm

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The four balls below are about to be struck by a stick. If the balls are hit with the same force in the same direction, which ball will go farthest?

• ball 1

• ball 2

• ball 3

• ball 4

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Katie is sitting on the ground playing with some toy trucks (see picture below). She takes the first toy truck and, using all her force, pushes it away from her. She then takes the second toy truck, which is much lighter than the first, and pushes it away from her. How does the movement of the trucks contrast?

• The smaller truck accelerates faster and moves a greater distance because more force is acting on it.

• The smaller truck accelerates faster and moves a greater distance because it has less mass.

• The larger truck accelerates faster and moves a greater distance because it has more mass.

• The larger truck accelerates faster and moves a greater distance because less force is acting on it.

Tags

NGSS.MS-PS2-1

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