G8- T3L1: Motion and Forces Quiz

What is a reference point used for in determining motion?

• To measure the speed of objects

• To compare positions of objects

• To determine the color of objects

• To calculate the weight of objects

Which of the following is an example of a noncontact force?

• Magnetism

• sliding down

• Friction

• Pushing a book

Tags

NGSS.MS-PS2-5

When two forces acting on an object are equal in strength and opposite in direction, they are called:

• Balanced forces

• Net forces

• Unbalanced forces

• Contact forces

What is the unit used to measure the strength of a force?

• Kilogram

• Newton

• Meter

• Second

If the net force acting on an object is zero, the forces are considered to be:

• Noncontact forces

• Balanced

• Contact forces

• Unbalanced

What is the force that pulls objects toward each other as a result of their masses?

• Magnetism

• Push

• Gravity

• Friction

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

How is a force described?

• By its color and shape

• By its speed and direction

• By its strength and direction

• By its temperature and size

Which of the following is an example of a contact force?

• Friction

• Magnetism

• Gravity

What happens when the forces acting on an object are unbalanced?

• The object disappears

• The object changes its motion

• The object moves at a constant speed

• The object remains stationary

Tags

NGSS.MS-PS2-2

What is the difference between contact and non-contact forces?

• Contact forces require physical touch, while non-contact forces do not

• Contact forces are stronger than non-contact forces

• Contact forces are invisible, while non-contact forces are visible

• Contact forces only act on living organisms

Tags

NGSS.3-PS2-3

NGSS.3-PS2-4