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3. Energy Calculations

Total questions: 19

Worksheet time: 11mins

Name
Class
Date
1.

Within a calculation, velocity is the term that refers to what?

a)

Speed

b)

Weight

c)

Force

d)

Distance

2.

Within numeric notation, the prefix nano is represented as x10−9. True or false?

a)

True

b)

False

3.

Which prefix is used to refer to a number that has been multiplied or is magnified by one million?

a)

Micro

b)

Kilo

c)

Mega

d)

Giga

4.

In order to calculate the energy for work done, you multiply force applied by what other value?

a)

Gravity

b)

Weight

c)

Distance moved

5.

The force of gravity is represented as which figure?

a)

9.8m/s

b)

8.9m/s

c)

343m/s

d)

19.8m/s

6.

Which unit of measurement is energy calculated in?

a)

Joules

b)

Kilograms

c)

Newtons

d)

Decibels

7.

Electrical energy is calculated by multiplying current and which other TWO values?

a)

Voltage

b)

Speed

c)

Time

d)

Distance

8.

Potential energy is also known as (a)   energy.

9.

Movement energy is technically referred to as (a)   energy.

10.

In engineering calculations, the Greek letter delta (Δ) is used to represent which piece of information?

a)

The difference or the gap between two values

b)

The height of an object

c)

The total number of several values once you add them together

11.

The heat capacity of a material relates to the amount of energy required to raise it's temperature. Different materials have different heat capacities. True or false?

a)

True

b)

False

12.

The concept of representing different values of a formula within a triangle helps with the action known as what?

a)

Transposition

b)

Reiteration

c)

Manipulation

d)

Triangulation

13.

When calculating Electrical Energy, time (t) is always measured using which unit of measurement?

a)

milliseconds

b)

seconds

c)

minutes

d)

hours

14.

The gravitational force on the moon is roughly 6 times weaker than it is on Earth. Taking this into consideration, if an astronaut weighed 90kg, what would their mass roughly be on the moon's surface?

a)

15kg (90kg/6)

b)

90kg

c)

540kg (90kg x 6)

d)

882kg (90kgx9.8m/s)

15.

The number 12000 has how many significant figures?

a)

5

b)

4

c)

3

d)

2

16.

If a water tank contains 70 litres of water, what is the mass of the amount of water in the tank?

a)

70kg

b)

70N

c)

70l/kg

d)

70 fluid ounces

17.

Ohm's law (V=IR) is used to calculate what?

a)

Velocity

b)

Frequency

c)

Voltage

18.

Kelvin is a unit of measurement used to represent what?

a)

Pressure

b)

Temperature

c)

Mass

d)

Gravity

19.

Fill in the blank... Electrical resistance is measured in (a)   .