Potential or Kinetic
Changes in Force
Energy Transformations
Definitions
Motion Graphs
100
What is the difference between Potential energy and Kinetic energy?
Potential energy is stored energy...energy NOT in motion. While Kinetic energy is used energy...energy IN motion.
100
What is a force?
A FORCE IS A PUSH OR PULL.
100
Which of these is an example of light energy being transformed into chemical energy? A . A glow stick lights up when broken. B. Water heated by the sun evaporates. C. A plant makes sugar in the sunlight. D. A battery causes a buzzer to vibrate.
C. A plant makes sugar in the sunlight.
100
What is the Law of Conservation of Energy? ** Energy is neither created.......
Energy is neither created or destroyed only changes from one form to another.
100
What does a deceleration graph look like?
Draw a deceleration graph.
200
When would a skateboarder have the most POTENTIAL energy? A. While rolling down the ramp. B. While moving up the ramp. C. Sitting at the bottom of the ramp. D. Sitting at the top of the ramp.
D. SITTING AT THE TOP OF THE RAMP.
200
What is the difference between a BALANCED for and an UNBALANCED force?
A balanced force is a force on an object that does NOT change the motion of the object. An unbalanced force is a force on an object that DOES change the motion of the object.
200
What energy transformation does a flashlight go through?
Answers may vary... choices could be chemical->electrical->light (radiant)....
200
What is Radiant energy?
Light energy, energy is transferred by radiation.
200
What would a no motion graph look like? How would you know that the graph is depicting no motion?
Draw a no motion graph. You would know that the graph is showing no motion because although the time is increasing the distance of the object is not.
300
Which of the following investigations (experiments) involves KINETIC energy? A What is the effect of a boat’s shape on its speed? B Do boats float higher in salt or fresh water? C How does the color of a boat affect heat absorption? D What material makes the strongest boat?
A. WHAT IS THE EFFECT OF A BOATS SHAPE ON ITS SPEED?
300
9.Which of the following is the correct formula for calculating speed? A Speed= force/distance (force divided by distance) B Speed= mass x acceleration (mass times acceleration) C Speed = distance/time (distance divided by time) D Speed = time x energy (time times energy)
SPEED = DISTANCE / TIME
300
What is the energy transfer of a lamp that is plugged into a wall socket and is working correctly?
electrical -> light
300
What is a pendulum?
A pendulum is a weight hung from a fixed point so that it can swing freely backward and forward.
300
What would a constant speed motion graph look like? What is the difference between a no motion graph and a constant speed graph?
Draw a constant speed graph. The difference between a no motion graph is; no motion - the time is increasing but the distance is staying the same. Constant speed- the time and distance are both increasing.
400
5.Students are investigating changes from potential to kinetic energy by rolling a marble down a ramp made by propping up a plastic ruler on a book and letting it roll down. Which of the following will change the potential energy the marble starts with? A Switching the plastic ruler with a wooden one B Adding more books beneath the ruler C Pushing the marble down the ramp D Replace the marble with a rock
B. ADDING MORE BOOKS BENEATH THE RULER.
400
There is a game of tug a war going on the rope is not moving at all. What does this mean in terms of force?
The forces are BALANCED. No one will win this game of tug of war as along as the forces are equal/balanced.
400
A TV works by transforming electrical energy (from the wall outlets) into what other types of energy?
Light energy (radiant), Sound energy, and thermal
400
What is potential energy?
Stored energy, energy NOT in motion.
400
Where would the X-AXIS be located?
On the horizontal line...from left to right.
500
9.Potential energy and kinetic energy are similar in that both – A are demonstrated when an object is at rest. B depend on the height of an object above the ground. C can each be converted into the other form. D will produce an increase in the mass of an object.
C. CAN EACH BE CONVERTED INTO THE OTHER FORM.
500
What is the difference in average speed between two cars, one that traveled 160 miles in 5 hours, and the other that traveled 140 miles in 5 hours?
Car ones average speed is 32 mph, car twos average speeed is 28 mph. The difference in average speed between the two is 4mph.
500
What is the energy transformation of a battery powered radio that is playing your favorite music?
chemical -> electrical -> sound
500
What does accelerating mean? What would an acceleration motion graph look like?
Accelerating means speading up. Draw an acceleration graph.
500
Where would the Y-AXIS be located?
On the vertical line (up and down)
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