Unit 2 JONES BCE Science intern Force, Motion, Energy

Multiple Choice

• L1

• L2

• L3

• L4

Multiple Choice

A student constructs the circuit shown for a science demonstration. With the switches in these positions, which lights are on?

• All the lights

• Lights 1 and 2 only

• Lights 3 and 4 only

• None of the lights

Multiple Choice

• A

• B

• C

• D

Multiple Choice

Which circuit shown will produce light when the switch is closed?

• Circuit A

• Circuit B

• Circuit C

• Circuit D

Multiple Choice

A student wants to build a circuit with four lightbulbs and one bell. The student wants to place a switch in the circuit so that only one light will still be on and the bell will still ring when the switch is opened. Which of these circuits should the student build?

• F

• G

• H

• J

Multiple Choice

• A

• B

• C

• D

Multiple Choice

• A

• B

• C

• D

Multiple Choice

A student builds a circuit allowing the lightbulbs to light, the buzzers to make sound, and the motors to turn. Which two switches can be open and still allow all of the parts to work?

• Switches 1 and 3

• Switches 1 and 4

• Switches 2 and 3

• Switches 3 and 4

Multiple Choice

A group of students is building the circuit represented in the diagram. What object can be used at Position X for the buzzer to sound when Switch K is closed?

• A power source

• Another bulb

• An insulated wire

• Another switch

Multiple Choice

A student wants to make a change to the circuit shown below so that when Switch 1 is open and Switch 2 is closed, only one light will be on in the circuit. Which diagram shows how the student should change the circuit?

• F

• H

• G

• J

Multiple Choice

• A

• B

• C

• D

Multiple Choice

The student is observing part of a plant with a microscope. Which statement describes a behavior of light in the microscope?

• Light travels through the microscope lens without changing direction.

• Moving in straight lines causes light to increase in brightness.

• Light refracts through the lens of the microscope.

• Moving in straight lines keeps light from reflecting.

Multiple Choice

• A

• B

• C

• D

Multiple Choice

• A

• B

• C

• D

Multiple Choice

• A

• B

• C

• D

Multiple Choice

A student is looking directly at a lit nightlight through two different cardboard tubes as shown. Through which tube, if any, will the light be seen and why?

• The bent tube only because the light bounces off the sides of the tube and travels through the tube to the student’s eye

• The straight tube only because the light travels in a straight line directly to the student’s eye

• Both tubes because light travels equally well along straight and curved paths

• Neither tube because both tubes absorb all of the light

Multiple Choice

For a class demonstration a student turned off the lights in the classroom. The student then shined light from a flashlight through a hole in a piece of cardboard. The class saw the narrow beam of light continue until another student placed a mirror in the light’s path. The light did not continue past the mirror because —

• light cannot travel very far

• the mirror absorbed all the light

• the light was refracted back to the light source

• light travels in a straight line and cannot go around objects

Multiple Choice

A student uses a flashlight to shine a beam of light on three different objects. Which table describes what happens to the light beam as it interacts with each object?

• Object 1 - Scattered Object 2 - Absorbed Object 3 - Reflected

• Object 1 - Refracted Object 2 - Absorbed Object 3 - Reflected

• Object 1 - Reflected Object 2 - Absorbed Object 3 - Refracted

• Object 1 - Absorbed Object 2 - Refracted Object 3 - Scattered

Multiple Choice

A thin beam of light is shown in this picture. What does the picture demonstrate about light?

• Light and its reflections travel in straight lines.

• Light cannot reflect from more than one surface.

• Light that goes through water cannot travel in straight lines.

• Light can travel in a circular path.

Multiple Choice

The picture shows how a light ray behaves with two different types of materials. Which table best describes the behavior of the light ray as it encounters the materials?

• Material 1: The light ray is scattered in all directions. Material 2: The light ray is refracted.

• Material 1: The light ray is absorbed. Material 2: The light ray is reflected.

• Material 1: The light ray is transmitted. Material 2: The light ray is refracted.

• Material 1: The light ray is refracted. Material 2: The light ray is reflected.

Multiple Choice

A student conducts the investigation shown in the diagram. In this experiment a paper cup hangs from a string tied to a single uncooked spaghetti noodle. The student measures and records the mass of a penny. The student then adds pennies to the paper cup one at a time. Which question is the student most likely trying to answer with this investigation?

• How many spaghetti noodles will it take to hold up the mass of a penny?

• How much force will it take to break the spaghetti noodle?

• How long should the string that holds the paper cup be in order to support the greatest mass of pennies?

• How does the distance between the two chairs affect the amount of force it takes for the spaghetti noodle to break?

Multiple Choice

Students conduct experiments to investigate friction. Which experiment will best test the effect of friction on objects?

• Drop two balls from the same height at the same time

• Roll two marbles on the carpet from the same starting point at the same time and with the same amount of force

• Roll three marbles across three different surfaces from the same starting point at the same time and with the same amount of force

• Release two balls from the top of a ramp at the same time

Multiple Choice

Students investigate force. The masses they use begin at rest on the ramp. The setup the students use is shown.

• Decrease the height of the ramp

• Increase the height of the ramp

• Add an additional mass

• Pull the spring scale with two hands

Multiple Choice

Students build a balloon-rocket car using a balloon, a straw, a water bottle, and some tape. When the straw is released by a student, the air from the balloon comes out. Which statement best describes the motion of the car when the straw is released?

• The car will move away from the wall in the same direction as the air that is leaving the balloon.

• The car will move toward the wall because of the force of the air from the straw.

• The car will move fast because the straw gets light as the air is released.

• The car will not move because the air escapes from the balloon.

Multiple Choice

A wagon is pushed and begins to move. As the wagon moves, it slows and comes to a stop. The wagon and the direction it is pushed are shown. What force causes the wagon to stop?

• The force of gravity which is acting in the same direction as the arrow

• The force of friction which is acting in the same direction as the arrow

• The force of gravity which is acting in the opposite direction of the arrow

• The force of friction which is acting in the opposite direction of the arrow

Multiple Choice

Students fill a cart with books. The cart has a handle on each end. Which actions will make moving the cart in one direction easiest for the students?

• Student 1 pulls the cart to the left while Student 2 pulls the cart to the right.

• Student 1 pulls the cart to the left while Student 2 pushes the cart to the left.

• Student 1 pushes the cart to the right while Student 2 pushes the cart downward.

• Student 1 pushes the cart to the right while Student 2 pulls the cart upward.

Multiple Choice

• A

• B

• C

• D

Open Ended

Write your answer in the box below.

Multiple Choice

• A

• B

• C

• D

Multiple Choice

• A

• B

• C

• D