Week Review 9/16- 9/20

Select all that apply: Which of these is an energy system?

• roller coaster

• bouncy ball in our hands

• a person

• None of these

Gravitational potential energy is...

• movement energy

• stored energy

• stored energy as a result of an objects vertical position above the ground

• stored energy as a result of an objects horizontal position above the ground

Which of these is an example of a force?

• a chair sitting on the ground

• a bouncy ball thrown across the room

• a roller coaster stopped at the end of a track

• a bouncy ball in our hands

Identify the independent and dependent variable from our lab this past week

• I: bounce height

  D: drop height

• I:bouncy ball color

  D: measuring tape

• I:drop height

  D: bounce height

• I:measuring tape

  D:bouncy ball color

Select all that apply: Which of these was an example of kinetic energy from our lab?

• the height of our hand above the ground

• when the ball was bouncing beside the measuring tape

• when the ball was staying still in our hand

• when the ball was rolling on the ground

Select all that apply: Which of these was an example of potential energy

• a bouncy ball in the garbage can

• a bouncy ball in our hand 150 cm above the ground

• a roller coaster stopped at the top of a hill before a drop

• the ball bouncing on the ground

Our experimental hypothesis are written in which format?

• My theory is...

• Because...

• If...then

• I think this is correct because...

A control variable in an experiment is...

• One that changes

• One that depends on the independent variable

• One that depends on the dependent variable

• One that remains the same

What is the average of these three lab trial numbers? 5cm, 3cm, 4cm

• 3cm

• 5cm

• 12cm

• 4cm

Based on our graph from lab, explain your results in a sentence

• As drop height increases, bounce height decreases

• As drop height increases, bounce height increases

• As drop height decreases, bounce height decreases

• As drop height decreases, bounce height increases