Quiz on Chapter 5 "Using Energy"

Question 1 of 20

1

Which of the following is a form of Energy?

Select one of the following:

Stored Energy
Potential Energy
Light Energy
Chemical Energy

Explanation

Question 2 of 20

1

Calculate how many megajoules of Energy are contained in:

( 4 800 000J )

Select one of the following:

0.48J
0.48MJ
4.8J
4.8MJ

Explanation

Question 3 of 20

1

What is Energy efficiency?

Select one of the following:

Energy efficiency is a measure of how much input energy is converted into wasteful output energy.
Energy efficiency is a measure of how much input energy is converted into useful output energy.
Energy efficiency is a measure of how much output energy is converted into useful output energy.
Energy efficiency is a measure of wasteful energy.

Explanation

Question 4 of 20

1

In Australia, climate change is likely to :

Select one or more of the following:

Cause less intense droughts.
Cause more frequent storms
Assists the spread of diseases
Destro the population of different speciesof plants and animals.

Explanation

Question 5 of 20

1

Improvements in house design can be achieved by:

Select one or more of the following:

Orientation of windows
Orientation of the garden
Shading north-facing windows.
Tinting west-facing windows.
Include coverings
Insulating the tv

Explanation

Question 6 of 20

1

The law of conservation of energy states that energy can never be created or destroyed. It can only get lost

Select one of the following:

True
False

Explanation

Question 7 of 20

1

The greater proportion of useful output energy, the greater the energy efficiency of the device

Select one of the following:

True
False

Explanation

Question 8 of 20

1

A car travelling down the freeway uses the heat energy in petrol to give it the kinetic energy to keep moving.

Select one of the following:

True
False

Explanation

Question 9 of 20

1

Fill the blank spaces to complete the text.

Heat naturally flows from regions of temperature to regions of temperature. In winter, the warm air from a heater or heating system can flow through in the walls to the or into the cooler garage.Adding to ceilings and between the walls of a home reduces the in winter and inside in summer. This makes heating and cooling more and makes a house more

Explanation

Question 10 of 20

1

A ❌ converts light energy from the Sun directly into ❌. This ❌ energy is converted into the ❌ energy of the blades, as well as ❌ and ❌ energy produced by the solar fan.

Drag and drop to complete the text.

solar cell

panel

electrical energy

light energy

electrical

light

kinetic

sound

heat

Explanation

Question 11 of 20

1

Fill the blank spaces to complete the text.

In 10 minutes, a power saw used 6050 J of electrical
energy. It converted:
• 1210 J into kinetic energy
• 1520 J into sound energy
• 3320 J into heat energy.
Question (1) What is the useful output energy from the saw?

Question (2) What is the energy efficiency of the saw in percentage?

Explanation

Question 12 of 20

1

Fill the blank space to complete the text.

An electric lamp is 25% efficient. If it receives 100 J per second of electrical energy, how much of this is transferred as light energy?

Explanation

Question 13 of 20

1

The need to save energy has led to new and innovative designs to increase efficiency. Some of these ideas include

Select one or more of the following:

Regenerative braking
Air conditioner
LED lightning
Windows
Light globes

Explanation

Question 14 of 20

1

How much is one kilowatt equal to in Joules?

Select one of the following:

36 000 000J
360 000 000J
3.6MJ
3 600 000J

Explanation

Question 15 of 20

1

Greater energy efficiency is indicated by less stars (or half stars) out of a possible six stars.

Select one of the following:

True
False

Explanation

Question 16 of 20

1

Click on each orange point and write the correct answer.

Complete the following table about Energy Conversiations.

Explanation

Question 17 of 20

1

Fill in the blanks to complete the design features of this energy efficient home.

Drag an answer into the correct orange point.

Eaves over windows for shading

Native vegetation

High quality pool blanket

3A-rated toilet

Rainwater tank

Gas-boosted solar hot water system

North-facing aspect

South facing aspect

West facing aspect

Explanation

Question 18 of 20

1

Click on each orange point and write the correct answer.

Energy transformations are shown using an arrow. Complete the following chart.

Explanation

Question 19 of 20

1

Why is it that the process of converting the chemical energy of coal into electrical energy is very inefficient ?

Select one of the following:

Because coal is a fossil fuel
This is becasue heat energy is lost at each step of generating and delivering the electricity.
This is because it's really expensive
This is because coal is a limited supply.
This is because only a small fraction of the original chemical potential energy of coal is converted into the useful energy needed to operate the devices.

Explanation

Question 20 of 20

1

Most energy conversions waste some energy, usually releasing it as kinetic energy.

Select one of the following:

True
False

	Created by Ahmed Almohammed over 7 years ago

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Quiz on Chapter 5 "Using Energy"

Question 1 of 20

Which of the following is a form of Energy?

Select one of the following:

Explanation

Question 2 of 20

Calculate how many megajoules of Energy are contained in: ( 4 800 000J )

Select one of the following:

Explanation

Question 3 of 20

What is Energy efficiency?

Select one of the following:

Explanation

Question 4 of 20

In Australia, climate change is likely to :

Select one or more of the following:

Explanation

Question 5 of 20

Improvements in house design can be achieved by:

Select one or more of the following:

Explanation

Question 6 of 20

The law of conservation of energy states that energy can never be created or destroyed. It can only get lost

Select one of the following:

Explanation

Question 7 of 20

The greater proportion of useful output energy, the greater the energy efficiency of the device

Select one of the following:

Explanation

Question 8 of 20

A car travelling down the freeway uses the heat energy in petrol to give it the kinetic energy to keep moving.

Select one of the following:

Explanation

Question 9 of 20

Fill the blank spaces to complete the text.

Explanation

Question 10 of 20

A ❌ converts light energy from the Sun directly into ❌. This ❌ energy is converted into the ❌ energy of the blades, as well as ❌ and ❌ energy produced by the solar fan.

Drag and drop to complete the text.

Explanation

Question 11 of 20

Fill the blank spaces to complete the text.

In 10 minutes, a power saw used 6050 J of electrical energy. It converted: • 1210 J into kinetic energy • 1520 J into sound energy • 3320 J into heat energy. Question (1) What is the useful output energy from the saw? Question (2) What is the energy efficiency of the saw in percentage?

Explanation

Question 12 of 20

Fill the blank space to complete the text.

An electric lamp is 25% efficient. If it receives 100 J per second of electrical energy, how much of this is transferred as light energy?

Explanation

Question 13 of 20

The need to save energy has led to new and innovative designs to increase efficiency. Some of these ideas include

Select one or more of the following:

Explanation

Question 14 of 20

How much is one kilowatt equal to in Joules?

Select one of the following:

Explanation

Question 15 of 20

Greater energy efficiency is indicated by less stars (or half stars) out of a possible six stars.

Select one of the following:

Explanation

Question 16 of 20

Click on each orange point and write the correct answer.

Complete the following table about Energy Conversiations.

Explanation

Question 17 of 20

Fill in the blanks to complete the design features of this energy efficient home.

Drag an answer into the correct orange point.

Explanation

Question 18 of 20

Click on each orange point and write the correct answer.

Energy transformations are shown using an arrow. Complete the following chart.

Explanation

Question 19 of 20

Why is it that the process of converting the chemical energy of coal into electrical energy is very inefficient ?

Select one of the following:

Explanation

Question 20 of 20

Most energy conversions waste some energy, usually releasing it as kinetic energy.

Select one of the following:

Calculate how many megajoules of Energy are contained in:

( 4 800 000J )

In 10 minutes, a power saw used 6050 J of electrical
energy. It converted:
• 1210 J into kinetic energy
• 1520 J into sound energy
• 3320 J into heat energy.
Question (1) What is the useful output energy from the saw?

Question (2) What is the energy efficiency of the saw in percentage?