Phys Sci Ch 15 B: Question Preview (ID: 19393)


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The equation E=mc2 relates energy and
a) force b) gravity c) mass d)
In which of the does Einstein's famous equation apply?
a) water falling in a waterfall b) nuclear fission and fusion reactions c) a driver brings a car to a halt d)
Which of the following statements is a consequence of the equation E=mc2?
a) Energy is released when matter is destroyed b) mass and energy are equivalent c) all of the above d)
What is biomass energy?
a) the chemical energy stored in living things b) the electromagnetic energy stored in living things c) the nuclear energy stored in living things d)
Nonrenewable energy resources do not include which of the following?
a) coal b) hydrogen fuel cells c) oil d)
Fossil fuels currently account for the majority of the world's energy use because they are
a) distributed evenly throughout the world b) nonpolluting c) relatively inexpensive and readily available d)
A drawback of solar energy is that it
a) cannot be converted directly into electrical energy b) depends on the climate c) produces water pollution d)
A benefit of a hydrogen fuel cell is that its byproduct is
a) carbon dioxide b) oxygen c) water d)
Which of the following types of transportation is NOT mass transportation?
a) bus b) car c) streetcar d)
Based on your knowledge of energy conservation, which of the following statements is true?
a) manufacturers can increase a light bulb's efficiency by using technology that increases the amnt of electromag en. of bulb b) Energy can be conserved by turning off lights when they are not in use c) both d)
Energy of an object increases when _____ is done on the object
a) work b) energy c) speed d)
If the ______ of an object doubles, its kinetic energy doubles
a) mass b) speed c) height d)
Energy that is stored due to position or shape is called ______ energy.
a) kinetic b) potential c) thermal d)
You can calculate an object's gravitational potential energy by using the equation ______.
a) 1/2mv2 b) mgh c) d)
The sum of the kinetic energy and potential energy of an object is called its ____ energy.
a) mechanical b) thermal c) potential d)
The process of changing energy from one form to another is called energy _______
a) conversion b) conservation c) creation d)
energy cannot be created or destroyed - is a statement of the law of _______.
a) conservation of mass b) 1st law of thermodynamics c) conservation of energy d)
Turning off unused lights or appliances is an example of energy _______.
a) conservation b) conversion c) creation d)
Which of the following is NOT a nonrenewable resources
a) Solar b) Oil c) Natural gas d)
Which of the following is NOT a renewable energy resources
a) Geothermal b) Hydroelectric c) Coal d)
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