Tema 4 - Electric energy

Question 1

What is a light pollution?

Answer 1

Too much artificial lighting in the night

Question 2

How does light pollution affects humans?

Answer 2

1- Change sleep patterns of the mammals
2- Affects bat’s night vision
3- Affects human night
4- A brighter night affects to animal became prey
5- We can not to see a sky

Question 3

What can you do to reduce the light pollution?

Answer 3

1- Only use garden light when it is necessary
2- Use only yellow light not blue or white
3- Put point light downwards no upwards
4- Do not use outdoor’s light in migration period
5- Turn off lights when you leave the room

Question 4

What is the electricity?

Answer 4

It is a form of energy, it can be produce by renewable and non-reneweable

Question 5

What is the composition of the atoms?

Answer 5

1- Electrons (negative)
2- Protons (positive)
3- Neutrons (neutral)

Question 6

When an atom gains electrons what will be its charge?

Answer 6

Negative

Question 7

When an atom gains protons what will be its charge?

Answer 7

Positive

Question 8

an electron repels to ….

Answer 8

electron

Question 9

an electron attract to ….

Answer 9

proton

Question 10

What is a electrical conductors?

Answer 10

It is a material that allow electricity travel through

Question 11

What is a electrical insulators?

Answer 11

It is a material that do not allow electricity travel through

Question 12

Some electrical conductors?

Answer 12

1- Cupper
2- Silver
3- Aluminium

Question 13

Some insulators conductors?

Answer 13

1- Plastic
2- Paper
3- Wood

Question 14

What is a electrical circuit?

Answer 14

It is a path where the electricity flows

Question 15

What are the components of a electrical cirucuit?

Answer 15

1- An energy source
2- A conductor
3- A load
4- A switch

Question 16

Where do we use electricity?

Answer 16

1- At home
2- At School
3- At industry
4- Transportation

Question 17

What are the source of electrical energy?

Answer 17

1- Renewabled
2- Non renewables

Question 18

What are renewable energy?

Answer 18

1- Solar panels
2- Wind turbines
3- Hydroelectric plants

Question 19

What are non renewable energy?

Answer 19

1- Fuel fossil
2- Thermal plants
3- Nuclear plants

Question 20

How does electricity reach our homes?

Answer 20

1- Electricity is generated from a source (renewable / non renewable)

2- The electricity goes to the substation where a transformer increases voltage

3- The electricity with hight voltage travel long distance

4- The electricity arrive in a other substation where a transformer reduces voltage

5- The electricity leaves the substation and goes to the electrical providers

6- Electricity enter in our home

Question 21

What is a robot?

Answer 21

It is a machine can be programed to do some task to make our lives easer.

Robots works with electricity

Question 22

Examples robots?

Answer 22

1- Vacuum cleaner
2- Robotics legs

Question 23

Advantages of robots

Answer 23

1- Robots can save time
2- They can do repetitive task quickly
3- The can be use in surgery
4- They do not need break when they work

Question 24

Disadvantages of robots