Energy and Change

Question 1

Describe how humans get energy from milk.

Answer 1

The sun provides energy for plants to grow.
The cows gain energy by eating the plants.
The milk from the cows contain energy that is transferred to people when they drink the milk.

Question 2

Define energy

Answer 2

Energy is the ability to do work.

Question 3

Define a producer

Answer 3

A living thing that makes its own food.

Question 4

Define a consumer

Answer 4

A living thing that can’t make its own food and gets energy from eating a producer’s food.

Question 5

Define a decomposer

Answer 5

A living thing that gets energy from breaking down dead plants and animals

Question 6

Name 4 types of energy

Answer 6

Sound energy
Light energy
Heat energy
Movement energy

Question 7

What is a fossil fuel?

Answer 7

Remains of plants and animals that can be burnt to release energy.
Coal and oil.

Question 8

What are renewable energy sources?

Answer 8

Energy sources that won’t run out like the sun and the wind.

Question 9

What are non-renewable energy sources?

Answer 9

Energy sources that will eventually out like oil and coal.

Question 10

What is input and output energy?

Answer 10

The energy out into a machine is called input energy and the energy that the machine gives off is called the output energy.

Question 11

What is the main source of all energy on earth?

Answer 11

The sun

Question 12

What is a carnivore?

Answer 12

An animal that eats meat

Question 13

What is a herbivore?

Answer 13

An animal that eats plants

Question 14

What is an omnivore?

Answer 14

An animal that eats both plants and meat

Question 15

All living things need what to live?

Answer 15

Energy

Question 16

Plants use what to make their own food?

Answer 16

Energy from the sun

Question 17

Plants get water and other _______ from the soil.

Answer 17

nutrients

Question 18

What types of energy are there?

Answer 18

Stored energy, 
movement energy, 
heat energy, 
solar energy, 
chemical energy, 
sound energy, 
electrical energy, 
and light.

Question 19

Name the parts of the ear.

Answer 19

Outer ear, 
earlobe, 
auditory canal, 
ear drum, 
anvil, hammer, stirrup, 
cochlea

Copy and paste:
https://www.nde-ed.org/EducationResources/HighSchool/Sound/humanear.htm

Question 20

Describe how you hear something.

Answer 20

Sound waves through the air;
Outer ear catches the sound and sends it into auditory canal;
Waves reach eardrum and make it vibrate;
Vibrations travel through tiny bones called anvil, hammer, and stirrup in your middle ear;
Vibration travels through inner ear;
Nerve takes message to your brain;
Your brain “hears” sound.

Question 21

What are nutrients?

Answer 21

Nutrients are substances in food that living things need to live, to grow and to stay healthy.

Question 22

What is the energy chain?

Answer 22

The order in which the energy goes from sun to plant or animal.

Question 23

What is energy transfer?

Answer 23

The process by which energy goes from one part of the energy chain to another.

Question 24

What would happen if there was no sun?

Answer 24

There would be no food - and we would all freeze.

Question 25

Name some sources in which energy is stored.

Answer 25

Food, 
wood, 
crude oil, 
coal, 
natural gas.

Question 26

What is paraffin used for?

Answer 26

It is a liquid that can be burnt and used for heating and light.

Question 27

What is a system?

Answer 27

Something that has two or more parts that work together to make something happen. Machines and applicances are types of systems.

Question 28

Name three groups of types of musical instruments.

Answer 28

Percussion instruments,
String instruments,
Wind instruments.

Question 29

What is the input energy for a: Tambourine, Guitar, Drum, Whistle?

Answer 29

Tambourine = Shake it or tap it, 
Guitar = Pluck or strum the strings with your fingers, 
Drum = Hit it with sticks or your hand, 
Whistle = Blow air through it

Question 30

What is a tuning fork?

Answer 30

Piece of metal with two “fingers” that make a musical note when you tap it.

Question 31

What is a sound wave?

Answer 31

The way sound travels through air.

Question 32

What makes a sound louder?

Answer 32

More input energy.

Question 33

What sound will a string stretched tight make?

Answer 33

A high sound.

Question 34

What sound does a long tube make?

Answer 34

A low sound.

Question 35

What are the names of two indigenous African instruments?

Answer 35

Mbira,
Marimba,
Horn