Semester Review - Energy, Waves Question Preview (ID: 58346)


Energy, Waves. TEACHERS: click here for quick copy question ID numbers.

What is the main source of energy that the United States uses to generate electricity?
a) Biomass energy
b) Solar energy
c) Nuclear energy
d) Fossil fuels

Burning wood in your fireplace is an example of what source of energy?
a) Biomass energy
b) Solar energy
c) Hydropower
d) Fossil fuels

What is the energy called that comes from the heat of the earth
a) Geothermal
b) Solar
c) Wind
d) Nuclear

This illustration shows a hand generator. Turning the handle of the generator spins a magnet and creates an electric current that lights the bulb. Which of the following observations can be used to indicate the strength of the current created by th


a) The brightness of the bulb
b) The size of the magnet
c) The length of the handle
d) The mass of the generator

A graph showing the kinetic energy of a 10 kg object at different speeds is below: Based on the information in the graph, we can predict that the kinetic energy of the object at 2 m/s would be


a) 12 joules
b) 20 joules
c) 38 joules
d) 44 joules

This graph shows the kinetic energy of both a school bus and a pick-up truck at they move at various speeds. Under which of the following conditions can the pick-up have more kinetic energy th


a) The pick-up is moving at 1 m/s and the school bus is moving at 2 m/s
b) The pick-up is moving at 4 m/s and the school bus is moving at 2 m/s
c) The pick-up is moving at 2 m/s and the school bus is moving at 3 m/s
d) The pick-up is moving at 4 m/s and the school bus is moving at 3 m/s

A graph showing the kinetic energy and speed of a moving object is provided. Which of the following can be concluded from the graph


a) Kinetic energy increases as speed increases
b) Speed is only related to the size of an object
c) Kinetic energy only changes when speed changes
d) All moving objects have the same kinetic energy

A graph showing the kinetic energy and mass of objects traveling at 10 m/s is shown. In order for an object moving at 10 m/s to have a kinetic energy of 1800 Joules, the object must have a mass in the range of
a) 0-10kg
b) 10-20kg
c) 20-30kg
d) 30-40kg

A book sitting on a table has potential energy because of the gravitational pull of the earth. Which of the following would increase the potential energy of the book?
a) Sliding it across the table
b) Opening it to the middle
c) Dropping it on the floor
d) Lifting it to a high shelf

An illustration of a roller coaster is provided. At which point in the roller coaster's journey along the track does it have the greatest potential energy?


a) W
b) X
c) Y
d) Z

At which position on the diagram would an apple have the greatest potential energy


a) Position 1
b) Position 2
c) Position 3
d) Position 4

The total kinetic energy of two cars is measured before and after they crash into each other. The total kinetic energy of the two cars after the crash is less than the total kinetic energy before the crash. Which explains the loss of KE
a) Some of the car's kinetic energy was converted to sound and heat energy
b) Both of the cars were being pulled downward by the force of gravity
c) The cars will eventually stop moving, which shows that energy is always lost
d) The car with more mass gave up its kinetic energy to the car with less mass

A wave carries energy, not matter
a) True
b) False
c)
d)

Which of the waves is carrying the greater amount of energy ?


a) A
b) B
c) C
d) D

Which of the following provides an example of sound waves being reflected
a) A noise that produces an echo when it bounces off a distant wall
b) Water in a glass vibrating because of the sound of thunder
c) Hearing music played by a neighbors stereo through a wall
d) The sound of a distant train getting louder as it approaches an observer

A ringing bell makes noise inside a glass jar. Then the air is removed from the glass jar using a vacuum pump. When all of the air leaves the jar, the sound of the ringing bell can no longer be heard.Which of the following best explains why the stud


a) Removing the air from the jar allows the bell to ring only very softly.
b) The air in the jar provides a medium for the sound to travel through.
c) The sound in the empty jar is reflected off the inside of the glass sides.
d) The difference in pressure inside and outside the glass jar is too great.

Mechanical waves require a medium to travel through.
a) True
b) False
c)
d)

The _____________ the wavelength, the more times it will pass by in one second. The _____________ the wavelength, the fewer times it will pass by in one second.
a) Larger; smaller
b) Smaller; smaller
c) Larger; larger
d) Smaller; larger

Music studios use “soundproof” recording rooms. The walls of these rooms are designed in such a way that the only sounds that reach the microphones inside the room are sounds from inside the room. The most important characteristic in designing the so
a) allow communication between people inside and outside the room.
b) reflect sounds around the room to alter their properties.
c) allow sounds to move easily from one place to another.
d) absorb sounds and prevent them from passing through.

Sound waves travel the fastest through which state of matter?
a) Liquid
b) Solid
c) Gas
d)

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