A process used by scientists to gather evidence that leads to understanding is _______.

• the scientific method

• continental drift

• the big bang theory

Tags

NGSS.MS-LS1-1

Which of the following statements about density is TRUE?

• density is a physical property of matter and sizes doesn't matter.

• density is not a property of matter and so density depends on the size of the object.

• density of a small piece of gold and a large piece of gold will be different.

Particles will move faster and farther apart when its state changes from _______.

• liquid to solid

• gas to liquid

• liquid to gas

Tags

NGSS.MS-PS1-4

The force that ALWAYS opposes motion is called ___________.

Which of the following is a unit of speed?

• m/s
• m/s²          

• N

Tags

NGSS.MS-PS3-1

Which of the following is NOT accelerated motion?

• a ball being juggled

• a person walking at 2.5 m/s along a straight road

• a braking cyclist

Inertia is the resistance of a physical object to change its state of ___________.

Any change in an object’s velocity is caused by ____________.

• the object’s mass

• a balanced force

• an unbalanced force

Tags

NGSS.MS-PS2-2

The gravitational force between two objects is proportional to their ___ and decreases rapidly as the distance between the masses ___.

• masses, increases

• distance, decrease

• masses, decreases

Tags

NGSS.MS-PS2-4

__________ is defined as mass times velocity.