EFM Lesson 4 & 6 Review

The sum of all forces working on an object is

• net force

• inertia

• gravity

• acceleration

Tags

NGSS.MS-PS2-2

If the forces on an object at rest are balanced (net force is zero), then

• the object will stay at rest

• the object will slowly begin to move

• the object will move quickly then eventually stop

• the object will move at the same speed until it hits another object

Tags

NGSS.MS-PS2-2

If the forces on a moving object are balanced (net force is zero), then

• the object will stay at rest

• the object will slowly begin to move

• the object will move quickly then eventually stop

• the object will move at the same speed until it hits another object

Acceleration of an object depends on

• force

• mass

• force and mass

• none of the above

Tags

NGSS.MS-PS2-2

Which of these images is NOT an example of Newton’s 3rd Law; For every action there is an equal and opposite reaction?

• 
• 
• 

Tags

NGSS.MS-PS2-1

Which of Newton's Laws of Motion states: A moving object will remain in motion at the same speed and direction unless a net force acts on it?

• 3rd law

• 1st law

• 2nd law

• 4th law

_______ is the point from which you observe motion.

• reference frame

• average speed

• speed

• acceleration

____ is the rate at which an object changes speed or direction.

• reference frame

• average speed

• speed

• acceleration

You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two-week period, the height is measured.

What is the dependent variable?

• The type of plant being used in the experiment

• How tall the plants were after a two week period

• The concentration of salt solutions each plant receives

• The plant receiving pure water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two-week period, the height is measured.

What is the independent variable?

• The type of plant being used in the experiment

• How tall the plants were after a two week period

• The concentration of salt solutions each plant receives

• The plant receiving pure water

Tags

NGSS.MS-LS2-1