Download study guide for energy final exam jan 2014

STUDY GUIDE FOR ENERGY FINAL EXAM JAN 2014
1. On a roller coaster, where is the potential energy greatest?
Where is the kinetic energy greatest?
How does the
total energy at the beginning of the ride compare with the total energy at
the end of the ride?
2. A piece of paper has 10 Joules of chemical energy. The paper is
burned and the chemical energy is changed into heat energy and radiant
energy. How many Joules of heat and radiant energy (combined) are
there?
(Remember the Law of Conservation of Energy)
3. If a solar panel uses the sun’s energy to heat water for a swimming
pool, what energy transformation takes place?
4. On a hot day, your glass of iced tea has moisture on the outside. Why?
5. You are making ice by pouring water into ice trays and putting the
trays in the freezer. What is happening to the kinetic energy of the
water?
6. When you eat and then go for a run, what energy transformation takes
place?
7. If a hot rock is placed in a cooler container of water, the rock will lose
heat to the container of water until they reach the ______ temperature.
8. In what direction does heat transfer occur?
9. Beaker 1 has 100 ml of water and beaker 2 has 50 ml of water. Both
are at the same temperature. Which has more thermal energy?
10. A light bulb changes electrical energy into light energy and thermal
energy. If you start out with 100 Joules of electrical energy, what will
the total number of Joules of light and thermal energy be?
Why?
11. What happens if 2 objects at different temperatures are touching?
12. How does the TOTAL amount of energy change during energy
transformations?
13. How is heat from the Sun transferred to Earth?
14. If two objects are touching, how is heat transferred?
15. When you hold a glass of iced tea, your hand gets cold. Why?
16. You put a kettle of water on the stove. The water in the bottom heats
up, the molecules move faster, expand and rise to the top. The cooler
water sinks to the bottom. This heat transfer in the water is an
example of _________________________.
17. Compare air particles in a warm room of 25 C to air particles at 15 C.
The particles at 25 C move __________, spread out ________ and
have _____________ kinetic energy.
18.If a small car and a larger car are traveling at the same velocity, which
has more kinetic energy?
19.Which type of heat transfer does not require matter?
20. What happens to the kinetic energy of particles as the temperature
increases?
21. What is the ability to do work or cause change?
22. For an object to have kinetic energy, what must it be doing?
23. Natural gas is used to heat water. Describe the energy
transformation.
24. When you burn something, ____________ energy is changed into
_______, and _______________ energy.
25. The movement of thermal energy from a warmer object to a cooler
object is called __________________________.
26. If the speed of an object increases, the ___________ energy
increases.
27. _____________________ is the heat transfer that occurs through the
flow of liquids or gases.
28. If you transfer enough heat away from a glass of water, what will
happen? The water will ______________.
29. What type of energy is stored in food and fuel?
30. Light, or radiant energy is one type of _________________________
energy. Other types are microwaves, X-rays, gamma rays, etc.
31. If you touch a hot stove, your hand gets burned because of _______.