Energy Review Guide
1. 0.543 meters =
__________ cm. 0.543
meters = __________ mm.
2. What is the unit
for work and energy? Joules Newtons Watts
3.
At 0 Celsius, water can be in these
states: solid
liquid gas
4. What type of potential
energy is stored in food? _________________________
5. How much work is done if a 5-kg cat climbs 5
meters up a tree? Write the equation,
plug in the numbers, solve and circle your answer.
6. How many watts would be expended if the 5-Kg cat
climbed 5 meters in 9 seconds? Write the equation, plug in the numbers, solve
and circle your answer.
7.
A
Which requires
more energy? Circle your answer.
A) Climbing straight up a mountain.
B
B) Climbing up the mountain
gradually by looping around it a few times.
C) The work is the same.
8. What is the
difference between heat and thermal energy?
9. Which color
absorbs heat quickly? White
Black
10. Friction does
work. How? Explain.
11. Write a statement of the
relationship between the variables shown on the graph.
12. Complete the photosynthesis
equation by writing coefficients on the lines:
Energy + 6CO_{2} + ____ H_{2}O à C_{6}H_{12}O_{6} + ____ O_{2}
13. What are the products if
something like wood, oil, or coal is burned?
14. A man on the radio claimed
that driving slower would not save gasoline. He didn’t understand that kinetic
energy = 1/2mv^{2}. But you do! Use the equation to prove that driving
slower would save energy. Choose 2 different velocities and compare the kinetic
energies.
15. Driving in the city wastes
more gasoline than driving on the highway. Why is this?
Remember, Work = Force x
Distance!
Celsius |
Fahrenheit |
Kelvin |
Boiling water = 100 |
boiling water = 212 |
Boiling water = 373.15 |
freezing water = 0 |
freezing water = 32 |
Freezing water = 273.15 |