8th grade Science Test

Which of the following is a reaction that a force cannot produce?

• Change a resting state within an object.

• Deform an object.

• Change a state of motion in an object.

• Create an object.

Which of the characteristics of vectors is indicated in this picture?

• 
  

  Sense

• Module

• Point of application

• Direction

What classification of deformable bodies is represented in this picture?

• Elastic

• Non-deformable

• Plastic

• Static

Select the image that shows the dynamic effect of speed change.

• 
• 
• 
• 

What happens when a net force is equal to zero?

• The body moves slowly.

• The body is in movement.

• All forces are acting on the body.

• The body is in rest.

Which type of motion happens when a body moves repeatedly back and forth?

• Translational

• Reciprocating

• Oscillating

• Rotary

Select the object that would move in a rotary motion.

• A carrousel

• A pendulum

• A car traveling

• A swing

Mass in motion is the definition of:

• Speed

• Momentum

• Direction

• Collision 

A train travelling along a railway is an example of:

• rest
• stillness
• Linear motion

• silence

Which of the following objects has a greater momentum?

• A bowling ball.

• A cheetah running.

• A person riding a bike.

• An airplane flying.