Chapter 3 Review

What is the definition of a scientific law?

• An explanation of why things occur in nature

• An explanation of what will happen under certain conditions

What is the definition of a scientific theory?

• An explanation of why things occur in nature

• An explanation of what will happen under certain conditions

True or false: Once a scientific theory gets more proof, it will become a scientific law.

• True

• False

What do we call a push or pull on an object?

• a tug

• a yank

• a force

Tags

NGSS.HS-PS2-1

Which of the following are examples of "non - contact" forces (distance forces)

• gravity

• magnetism

• friction

• applied force

Tags

NGSS.HS-PS2-4

NGSS.HS-PS2-5

NGSS.HS-PS3-5

When the net forces acting on an object are 0 N, we say the forces are balanced and there will be no change in the motion of the object.

• True

• False

Tags

NGSS.HS-PS2-1

Calculate the net force acting on the box

• 30 N

• 10 N to the right

• 10 N to the left

Tags

NGSS.HS-PS2-1

Calculate the net forces acting on the airplane

• 740 N to the right

• 760 N to the right

• 900 N to the right

• 700 N to the right

Tags

NGSS.HS-PS2-1

The force that opposes motion between two surfaces that are touching

• friction

• gravity

• magnetism

Which of the following are factors that can influence friction?

• the mass of the object

• the texture of the surfaces

• the amount of surface area

• all of these can influence friction