DvT
Bal vs Unbal
NoS
Energy
Force
100
What variable is listed on the y-axis of a Distance vs Time graph?
Distance
100
If forces are acting in the same direction, but not in equal amounts, is the net force balanced OR unbalanced?
Unbalanced
100
This variable is directly manipulated or changed by you in an experiment.
Independent Variable
100
When would a ball have the greatest amount of potential energy?
A) at its highest point
B) as it leaves your hand
C) just before it hits the ground
D) halfway up to its highest point
A) at its highest point
100
TRUE/FALSE: A force can only be a push, not a pull.
FALSE. A force can be a push OR a pull!
200
Which graph(s) indicate an object is NOT moving?
Graph A
200
What happens when unbalanced forces act on an object?
The motion of the object changes.
200
These are things that are kept the same or controlled during an experiment because they could affect your results.
Controlled Variables
200
Give an example of kinetic energy converting into potential energy.
Answers will vary. Accept all answers describing objects moving then stopping or slowing down.
200
Which type of force(s) can act only when two objects touch each other?
Contact Forces (friction, applied, normal)
300
Which graphs indicate that an object is traveling at a constant speed?
B, C and F
300
Which arrow indicates the normal force?
100 N upwards
300
Curtis is conducting an investigation to determine which brand of paper towels absorbs the most water.
What is the test variable (independent variable) and outcome (dependent variable) in this investigation?
Test variable: the brand of paper towels
Outcome: amount of water absorbed
300
Name each type of energy shown in the picture below.
CLOCKWISE: Mechanical, Nuclear, Radiant (Light), Electrical, Chemical, Thermal (Heat). Sound is NOT pictured.
300
Classify each example below as a(n) applied (A), normal (N), magnetic (M), or electrical (E) force.
1) compass pointing East
2) martial arts fight
3) static shock from touching a doorknob
4) flower pot sitting on a table
1) Magnetic Force
2) Applied Force
3) Electrical Force
4) Normal Force
400
Which graph shows acceleration?
Graph D
400
Gabe and Rashun were arguing over a baseball bat. Gabe pulled on the bat with a force of 15 newtons (N), while Rashun pulled with a force of 20 newtons (N) from the opposite side. Predict what will happen to the bat in terms of direction AND force.
The bat will move towards Rashun with a force of 5 newtons (N).
400
How are replication and repetition different?
Answers will vary. Accept all reasonable answers related to copying vs repeating, different people vs multiple trials, used to verify others results vs verify your own results.
400
Classify each type of energy as either Potential (P) or Kinetic (K).
400
How does an electrical force compare to a gravitational force?
Answers will vary. Accept all reasonable answers related to Electrical forces depending on charges and Gravitational forces depending on mass & distance.
500
Write a story that explains the motion displayed in the graph below.
Answers will vary. Accept all reasonable answers related to constant speed (5 m/s), or moving 25 m away in 5 s then no motion for 5 s.
500
Draw a diagram to show balanced forces during a game of Tug of War.
Answers will vary. Accept all reasonable answers similar to the image below.
500
What is the BEST advantage of testing hypotheses in controlled conditions? Give an example to support your answer.
A) avoiding dangerous conditions during experimentation
B) limiting the variables that can affect the experiment
C) making the experiment easier to conduct
D) keeping the experimental area sterile
B) limiting the variables that can affect the experiment
Accept all reasonable explanations.
500
Explain how the Law of Conservation of Energy applies to object(s) pictured below.
Answers will vary. Accept all reasonable answers related to energy transfer, energy transformation, neither creating nor destroying energy.
500
2 people are trying to move a heavy box. One person is pushing the box to the left, while the other person is pushing the box to the right. There is a net force of 10 N to the left. Draw a diagram to represent this scenario.
Drawings should be similar to the one below.
