Physical Science Unit Test

Examine the four sets of objects shown in the diagram. Each of the objects is made of the same material. The mass of the large objects is twice the mass of the small objects.

Which set of objects has the greatest gravitational force between them?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

How could Gerry be sure his device can exert enough force to lift the students’ backpacks?

• He should make sure the device exerts enough force to overcome friction between the backpack and the floor

  
  

• He should make sure that there is no net force when the device is acting on the backpacks

  
  

• He should be sure the lifting force that the device can exert is greater than the weight of the heaviest backpack

  
  

• He should make sure the device converts kinetic energy to potential energy in the backpacks

  
  

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-4

If objects 1 and 2 are magnets, what would you hypothesize would happen if objects 1 and 2 were placed close together?

• Object 2 will attract object 1 with magnetic force because they are oppositely charged.

  
  

• Object 2 will have no effect on object 1 because they are neutrally charged.

  
  

• Object 2 will repel object 1 with magnetic force because they are similarly charged.

  
  

• Object 2 will attract object 1 with gravitational force because it is larger in mass.

  
  

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following conclusions is supported by the data?

• Smaller objects have a greater magnetic force than larger objects

  
  

• Magnetic forces are stronger than gravitational forces

  
  

• The magnetic cube is switching the direction of its charge over time

  
  

• The object in B is made from a magnetically charged material, like a metal, rather than plastic

  
  

Tags

NGSS.MS-PS2-3

Students make a graph showing the motion of four objects.

Which of the following is a conclusion supported by the data in this graph?

• These objects have the same average speed

• None of these objects moved at a constant speed

• Object A had the greatest average speed

• Object C’s speed was greater than Object B’s speed

Tags

NGSS.MS-PS3-1

Students graph the motion of an object.

A student claims that the line on the graph shows an object moving in one direction at a constant speed. Is this student’s claim correct?

• No, the distance traveled does not change, so the object is not moving

• Yes, on a distance-time graph a line with no slope shows constant speed

• No, the flat line indicates that the object is changing direction

• Yes, a flat line indicates forward motion in one direction

Tags

NGSS.MS-PS3-1

6. The diagram below shows forces acting on a model airplane. Both its speed and height above the ground are constant. Which of the following conditions would cause the model airplane to descend toward the ground?

• The lift is equal to the drag.

• The lift is less than the weight.

• The thrust is equal to the weight.

• The thrust is greater than the drag.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The effect that water droplets in the air have on sunlight is most similar to which of the following?

• drinking straw carrying visible light

  
  

• prism refracting visible light

  
  

• radio broadcasting waves of radiation

  
  

• small buckets absorbing visible light

  
  

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

In which of these situations would a rainbow most likely be visible?

• when a mist rises over a waterfall

• in the beam of a flashlight on a warm evening

  
  

• underwater, when sunlight reaches the bottom

  
  

• under a dark cloud before a rainstorm

  
  

Tags

NGSS.MS-PS4-2

Sound waves need to travel through something made of atoms or molecules to keep moving. They travel at different speeds through different materials. Through which of the following would they be likely to travel fastest?

• Air

• Water

• Juice

• Wood

Tags

NGSS.MS-PS4-2