# Physical Science

## Chapter 4: Energy

### Self-Check Quiz.-Eng.

 1. __________ is the ability to cause change. Need a Hint? A) Momentum B) Work C) Power D) Energy 2. Which of the following objects has kinetic energy? Need a Hint? A) a ball rolling across the floor B) a bicycle parked at the top of a hill C) leaves lying on the ground beneath a tree D) a sunny windowsill 3. What two factors determine how much kinetic energy an object has? Need a Hint? A) position and mass B) speed and position C) speed and mass D) speed and surface area 4. __________ is the energy stored in an object due to its position. Need a Hint? A) Potential energy B) Kinetic energy C) Thermal energy D) Entropy 5. Which of the following objects has potential energy? Need a Hint? A) a glass sitting on a table B) a ball rolling across the floor C) a bicycle coasting down a hill D) a bowling ball knocking over a pin 6. What two factors determine how much potential energy an object has? Need a Hint? A) speed and position B) speed and mass C) mass and position D) speed and surface area 7. The __________ is the SI unit of energy. Need a Hint? A) watt B) joule C) ampere D) volt 8. __________ is energy stored by things that stretch or compress. Need a Hint? A) Elastic kinetic energy B) Gravitational potential C) Elastic potential energy D) Chemical kinetic energy 9. Energy stored in chemical bonds is __________. Need a Hint? A) chemical potential energy B) chemical kinetic energy C) energy of activation D) thermal potential energy 10. What two factors determine how much gravitational potential energy is in an object? Need a Hint? A) weight of the object and height above the ground B) weight and speed of the object C) shape of the object and its position relative to the ground D) shape and speed of the object 11. How much gravitational potential energy does a 75-kg diver have stepping off the edge of a 5-m platform? Need a Hint? A) 375 J B) 15 J C) 147 J D) 3,675 J 12. How much kinetic energy does a moving object have if its mass is 100 kg and it is moving at a speed of 5 meters per second? Need a Hint? A) 2,500 J B) 250 J C) 1,250 J D) 125,000 J 13. Which of the following vehicles has the most kinetic energy? Need a Hint? A) a 1,100-kg car traveling 60 km/h B) a 900-kg car traveling 80 km/h C) a 300-kg motorcycle traveling 100 km/h D) a 2000-kg truck traveling 50 km/h 14. Which of the following statements about an apple falling from a tree is true? Need a Hint? A) Its kinetic energy decreases and its potential energy increases. B) Its potential energy decreases and its kinetic energy increases. C) Its kinetic and potential energies remain constant. D) Its mechanical energy increases. 15. What is a joule? Need a Hint? A) the unit of force required to move 1 kg of mass 1 m/s/s B) a unit measuring the amount of energy we get from various foods C) the unit of measurement describing the change in velocity in a unit time D) a unit of energy that depends on both an object's mass and velocity