Physical Science Midterm Review

 Which of the following features should NOT be included in the scientific process?

•  hypothesis formation

• observation

•  experimenter bias 

• theory development

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

The momentum of an object depends on its mass and its 

• direction

• speed

• velocity

• size

Tags

NGSS.HS-PS2-2

Which segment represents the car slowing down?

• b

• c

• d

• e

Tags

NGSS.MS-PS3-1

 How does a ramp make it easier to move a heavy object a certain distance?

• by decreasing the distance the object moves

• by decreasing the amount of work required to move the object

• by changing the direction in which the object moves

• by decreasing the amount of force required to move the object

Tags

NGSS.MS-PS3-4

The variable that is changed due to a change in other variables is called the

• control variable

• dependent variable

• independent variable

• changing variable

If you traveled 90 km in 0.50 hours, what was your average speed?

• 120 km/h

• 25 km/h 

• 45 km/h

• 180 km/h

Tags

NGSS.MS-PS3-1

A snow skier slowing to a stop after skiing down a 

mountain demonstrates the effects of

__________ friction.

• air

• rolling

• static

• sliding

In which of the following situations do your arms do work on a stack of books?

• holding a heavy stack of books while standing

• carrying a heavy stack of books

• picking up a stack of books from the floor

• dropping a stack of books onto a table

Tags

NGSS.MS-PS2-2

A statement about what happens in nature and that seems to be true all the time is called a

• theory

• model

• scientific law

• hypothesis

Instantaneous speed is the rate of motion at an instant in time. Based on this statement, a reasonable conclusion is that if an object’s instantaneous speed does not change over time, then

• the object is quickly speeding up. 

• the object is very gradually slowing down.

• the object is moving at a constant speed.

• the object has returned to its beginning position.