Download Energy Test Review Sheet Document

Name: ________________________________________
Date: __________ Period _______
Energy Test Review Sheet
1. What is the definition of electricity? _________________________________
2. What form of energy is stored in a candle?
A. Light energy
B. Heat energy
C. Electrical energy
D. Chemical energy
3. What are the energy outputs when a candle burns? (Circle all that apply.)
A. Light energy
B. Sound energy
C. Electrical energy
D. Chemical energy
E. Heat energy
Look at the picture of the car. Please complete the questions
below, identify the types of energy transformations taking place.
4. What are the outputs of a car? (Circle all that apply.)
A. Light energy
B. Sound energy
C. Electrical energy
D. Chemical energy
E. Heat energy
F. Kinetic energy
Situation
5.
Use car battery
6.
Use headlights of car
7.
Listen to car radio
(speaker)
8.
Burn gas in engine
(motor) to make car go
Transformation of Energy (from what to what)
Variables and Reliability A: _________
Directions: Use the scenario to answer the following questions.
Question: How does the amount of time a battery is charged affect the time the
flashlight gives off light?
Procedure:
1. Place two uncharged batteries in the charger and turn the charger on for 30 seconds.
2. With the flashlight off, put the two charged batteries in the flashlight.
3. Turn the flashlight on. Measure the time the flashlight is giving off light.
4. Record the time the flashlight was giving off light.
5. Repeat steps 1-4 increasing the charging time to 60 s, 120 s, and 240 s.
6. Repeat the entire investigation (steps 1-5) two times.
7. Calculate and record the average time the flashlight gave off light for each charging
time.
1 Which variable was a controlled (kept the same) variable in this investigation?
o A. Type of rechargeable battery
o B. Time the battery charger was on
o C. Amount of light given off by the flashlight
o D. Amount of electricity used by the flashlight
2 Which variable was the manipulated (independent) variable in this investigation?
o A. Time that the light is given off by the flashlight
o B. Time between the trials for each charge
o C. Time the flashlight bulb gave off light
o D. Time the battery was charged
3 Which variable was the responding (dependent) variable in this investigation?
o A. Type of light bulb in the flashlight
o B. Length of time the flashlight gave off light
o C. Number of batteries used in the flashlight
o D. Amount of light given off by the flashlight
4 Why did the students do the investigation three times as Trials 1, 2, and 3?
o A. To follow the procedure for the investigation
o B. To practice timing the light given off in the investigation
o C. To improve the reliability of the results of the investigation
o D. To determine the best charging time to use in the investigation