Name:

ENERGY STUDY GUIDE

	1.	Three people of equal mass climb a mountain using paths A, B and C as seen in the diagram below.
Along which path or paths does a person gain the greatest amount of gravitational potential energy?

2.	Which graph best represents the relationship between the gravitational potential energy of an object near the surface of Earth and its height above Earth’s surface?
a.		b.		c.		d.		

3.	
What energy transformations take place in the image to the right?
a.	chemical è thermal èradiant	
b.	chemical è mechanical	
c.	mechanical è thermal	
d.	chemical  è electrical è thermal & radiant energy	

	4.	A 7.7 kg block is sliding down a horizontal, frictionless surface at a constant speed of 5.5 m/sec. Calculate for the kinetic energy of the block.

	5.	What is the amount of gravitational potential energy of a 9 kg watermelon before it is dropped from a 52 meter high building.

	6.  A pendulum swings back and forth between points A & C. Fill in the bar graph to the right that would represent the potential and kinetic energies at Point B?

                          

	7.	Which point on the rollercoaster shown has the most kinetic energy?

	8.	Which point on the rollercoaster shown would have the most thermal energy?

	9.	A bowler rolls a 5 kg bowling ball down the bowling alley at a speed of 11m/s. Calculate the kinetic energy of the bowling ball when it crashes into the pins.

	10.	If you go twice as fast, your kinetic energy becomes:____________________________________

	11.	Potential energy is the energy an object has because of its _________________________________

	12.	What would be the energy conversion from gasoline to powering a car?

	13.	A marble rolls along the track below with no friction. The sequence of positions on the track listed in order from the lowest to highest kinetic energy is:

a.	2, 6, 3, 4, 5, 1 	d.	6, 2, 3, 4, 5, 1	
b.	6, 3, 2, 4, 5, 1	e.	1, 2, 3, 4, 5, 6	
c.	1, 5, 4, 2, 3, 6	

	14.	A handheld generator in a science classroom makes a lightbulb glow when a student turns a hand crank on the generator. During its operation, this generator converts
a.	electrical èchemical  	
b.	electrical è mechanical 	
c.	chemical è electrical	
d.	mechanical è electrical	

	15.	Using the rollercoaster above: A 44 kg ball is rolling down a coaster. What is the potential energy of the ball at point 2?

	16.	What happens to the total mechanical (potential + kinetic) energy of a system when frictional forces produce heat?

	17.	As a car is slowed, most of its kinetic energy is converted by the brakes to:_____________________

18.	A mass is hung from a spring. The mass is raised to position A and released. The mass stretches between positions A and C. What type of energy is present in the stretched spring?