Scientific Method, Potential Energy and Energy Conversions Review

Question 1

Lifting an object 15 meters, compared to 5 meters, will give an object _____ potential energy.

Accepted Answer

three times as much

Question 2

A _____ is a statement that proposes a possible explanation to some phenomenon or event.

Accepted Answer

Hypothesis

Question 3

When a match is lit, _____ energy is converted into light and heat energy.

Accepted Answer

chemical

Question 4

The _____ is the factor that may change in response to a cause, and is the measured variable.

Accepted Answer

Dependent Variable

Question 5

When one object does work on another, energy is _____.

Accepted Answer

transferred

Question 6

In order for a person to dance, they must have what type of energy?

Accepted Answer

chemical potential energy

Question 7

If an object's mechanical energy remains constant and its potential energy increases, its

Accepted Answer

kinetic energy decreases.

Question 8

An object's gravitational potential energy depends on what two factors?

Accepted Answer

weight and height

Question 9

The _____ is the tested variable that the experimenter changes in a scientific experiment.

Accepted Answer

Independent Variable

Question 10

What type of energy is stored in a battery?

Accepted Answer

chemical potential energy

Question 11

What property of matter is defined as the amount of matter in an object?

Accepted Answer

mass

Question 12

In every energy conversion, some energy is always converted into

Accepted Answer

thermal energy.

Question 13

A magnet's north and south poles _____.

Accepted Answer

have opposite charges

Question 14

Which of these objects purposefully converts electrical energy into thermal energy?

Accepted Answer

hair dryer

Question 15

How does the skateboard's potential energy change as it moves from point 2 to point 4?

Accepted Answer

The skateboard's potential energy decreases.

Question 16

If the balloon has a negative charge, then the person's hair must have a _____.

Accepted Answer

positive charge.

Question 17

The _____ is the standard by which the results of your experiment can be compared.

Accepted Answer

Control

Question 18

Which of the following describes an object's kinetic energy being converted into G.P.E.?

Accepted Answer

A ball rolls up an inclined ramp.

Question 19

At which point along the softball's path does it have the most gravitational potential energy?

Accepted Answer

point 3

Question 20

Noah moves a 3000 N piano into the next room 6 meters away. How much work did he do?

Accepted Answer

18000 J

Question 21

During photosynthesis, plants

Accepted Answer

use light to produce new substances with chemical energy.

Question 22

What kind of energy conversion takes place in hydroelectric power plants?

Accepted Answer

kinetic to electrical

Question 23

A _____ in the scientific method is based on what was observed in the experiment.

Accepted Answer

Conclusion

Question 24

At what point does the swing have the least G.P.E.?

Accepted Answer

B

Question 25

Which type of energy depends on the distance between two particles and their charges?

Accepted Answer

electrical potential energy

Scientific Method, Potential Energy and Energy Conversions Review

Questions 25

Scientific Method, Potential Energy and Energy Conversions Review

Questions 25