Benchmark 2 6 questions

The student replaces the wire coil with a different wire coil wound 25 times and observes the sound is quieter. Which property is the student investigating?

• how the number of winds of copper wire affects the size of the paper cup

• how the number of winds of copper wire affects the magnetic field strength

• how the number of winds of copper wire affects the number of magnets

• how the number of winds of copper wire affects the distance between interacting objects

Tags

NGSS.MS-PS4-1

During a collision between two cars, airbags deploy rapidly. Which best explains how the deployment of airbags protects the riders in the car?

• It decreases the time of impact to zero for the riders.

• It forms a barrier to keep riders inside the car

• It increases the impact force on the riders during the collision.

• It decreases the impact force on the riders during the collision.

Tags

NGSS.HS-PS2-3

How can the motor be modified to increase the speed of the fan?

• The strength of the magnet determines fan speed. Magnets 1 and 2 should be taped together to form a stronger magnet.

• The mass of the wire coil determines fan speed. Fewer turns should be used to increase fan speed.

• The distance from the battery to the wire coil determines fan speed. The battery should be moved farther away

• The distance from the magnet to the wire coil determines fan speed. The wire coil should be placed farther from the magnet.

Tags

NGSS.MS-ETS1-1

Which statement describes how the force of the weight on the spring scale changes during the demonstration?

• The weight exerts a greater force on the spring scale than the spring scale exerts on the weight until the weight begins to move.

• The weight exerts an equal force on the spring scale as the spring scale exerts on the weight until the weight begins to move.

• The weight exerts a smaller force on the spring scale than the spring scale exerts on the weight at all times during the demonstration.

• The weight exerts an equal force on the spring scale as the spring scale exerts on the weight at all times during the demonstration.

Which comparison of the forces of the plane in flight must be correct?

• Force Y is less than force Z.

• Force Y is equal to force W.

• Force X is greater than force W

• Force X is less than force Z.

Tags

NGSS.MS-PS2-2

Which type of device does the student make?

• bar magnet

• electric motor

• electromagnet

• generator