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DSA Exam Review Questions and Answers 2024
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Exam of 3 pages for the course DSA at DSA (DSA Exam Review)
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DSA Exam ReviewWhat is the energy of motion called? - answer Kinetic Energy/ KE=0.50mv squared
What are the three factors that affect an object's gravitational potential energy? - answer
mass, height, & acceleration due to gravity/ PE = mgh
What type of energy increases as an object gets warmer? - answer thermal energy
What type of energy is stored in substances like fuel oil, propane, & gasoline? - answer
chemical potential energy
If you walk or run, what energy is converted to what energy. - answerchemical,
mechanical
Nuclear power plants convert what energy to what energy. - answernuclear, electrical
Solar cells convert what energy to what energy. - answerelectromagnetic, electrical
What are three things that can be said about energy creation, destruction, and
conversion according to the Law of Conservation of Energy? - answerEnergy can't be
created or destroyed. Energy can be converted.
What are the two components of mechanical energy? - answerIt is the sum of potential
and kinetic energy/ ME=KE+PE
Describe "biomass energy". - answerchemical potential energy stored in living things
What are nonrenewable sources? Name four major ones. - answeruranium, coal,
petroleum, natural gas
What are two big reasons why fossil fuels are used to supply the most energy in the
world? - answerfossil fuels are somewhat easily available and inexpensive
Name a drawback of solar energy. - answerreliability; unpredictable based on the
weather
What is a benefit of the hydrogen fuel cell? - answerrenewable/ non polluting/ uses
water
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