Science end of year revision

Question 1

Does a solid have a fixed state?

Answer 1

Yes

Question 2

Does a liquid fill the shape of the container?

Answer 2

Yes

Question 3

Can gas particles move freely?

Answer 3

Yes

Question 4

What is boiling?

Answer 4

When a substance turns from a liquid to a gas.

Question 5

What is diffusion?

Answer 5

When particles move from where there are many to where there are few.

Question 6

What is the solute?

Answer 6

The thing that gets added to the solvent.

Question 7

What is the solvent?

Answer 7

The thing that the solute dissolves into.

Question 8

What is filtration?

Answer 8

When you use filter paper to seperate out a solid from a liquid.

Question 9

What is evaporation?

Answer 9

When you boil away a liquid and are left with a solid.

Question 10

What is a solution?

Answer 10

When you mix a solvent and the solute together.

Question 11

Why does your body need carbohydrates?

Answer 11

They provide quick and efficient energy for the body.

Question 12

Why does your body need fibre?

Answer 12

Healthy digestion and effective bowel function.

Question 13

Why does your body need protein?

Answer 13

For repair, growth and efficient working of body tissues.

Question 14

Why does your body need fat?

Answer 14

To keep you warm and for energy, protects vital organs.

Question 15

What do vitamins and minerals do to help your body?

Answer 15

Energy, stops disease,bone growth, strength, functions happen.

Question 16

Why do you need water?

Answer 16

It is the main component in blood and cells

Question 17

What is sublimation?

Answer 17

The change of state from a solid to a gas.

Question 18

What happens when a liquid freezes?

Answer 18

It changes to a solid.

Question 19

What is melting?

Answer 19

The change of state from a solid to a liquid.

Question 20

What is condensation?

Answer 20

The change of state from a gas to a liquid.

Question 21

What is boiling?

Answer 21

The change of state from a liquid to a gas.

Question 22

What is it called when 2 or more elements combine?

Answer 22

A compound

Question 23

What is equalibrum

Answer 23

When there are the same amount of particles on both sides of the membrane.

Question 24

What colour is iodine if there is no starch in food?

Answer 24

Orange

Question 25

What colour is iodine if there is starch in food

Answer 25

Blue-black

Question 26

Name the digestive system in order

Answer 26

Mouth, oesophegus, Stomach, small intestine, large intestine, rectum, anus.

Question 27

What does the digestive system do?

Answer 27

Absorbs nutrients from the food you eat.

Question 28

What happens in the oesophagus

Answer 28

Perestalsis the pushing down of the food.

Question 29

What is the function of the stomach?

Answer 29

To churn food using acids.

Question 30

What does iodine test for?

Answer 30

Starch

Question 31

What is the independent variable?

Answer 31

The thing you change

Question 32

What is the dependent variable?

Answer 32

The thing you measure

Question 33

What are the control variables?

Answer 33

The things you keep the same.

Question 34

What does food release when it burns?

Answer 34

Chemical energy.

Question 35

Name the three types of muscle

Answer 35

Skeletal, cardiac smooth

Question 36

Where are cardiac muscles found?

Answer 36

In the heart

Question 37

Do we conscioisly control skeletal muscles?

Answer 37

Yes but not the others.

Question 38

What is the function of the testis?

Answer 38

To produce sperm

Question 39

Where are female eggs stored?

Answer 39

In the ovary

Question 40

What is the uterus?

Answer 40

Where the foetus develops.

Question 41

Why does sperm have a flagellum?

Answer 41

To propel itself to the egg.

Question 42

What does the egg do to stop more sperm entering.

Answer 42

Hardens itself so the sperm can’t break through

Question 43

How many months is the woman pregnant for.

Answer 43

9 months