Y7

Question 1

What part of the cell contains genetic material?

Answer 1

Nucleus

Question 2

Which structure allows materials to move in and out of a cell?

Answer 2

Cell membrane

Question 3

Where does respiration happen in cells?

Answer 3

Mitochondria

Question 4

What is the jelly-like substance inside cells where reactions happen?

Answer 4

Cytoplasm

Question 5

True or False: Only plant cells have cell membranes.

Answer 5

False

Question 6

Which organelle contains chlorophyll?

Answer 6

Chloroplasts

Question 7

What are the three states of matter?

Answer 7

Solid, liquid, gas

Question 8

What is the name of the process where a gas becomes a liquid?

Answer 8

Condensation

Question 9

What happens to particles when a solid melts?

Answer 9

They move faster and spread out

Question 10

Which state of matter has the most energy?

Answer 10

Gas

Question 11

True or False: Particles in a solid are arranged randomly.

Answer 11

False

Question 12

What is the unit of force?

Answer 12

Newton (N)

Question 13

What instrument is used to measure force?

Answer 13

Newton meter (spring balance)

Question 14

What force slows things down when they move?

Answer 14

Friction

Question 15

A spring stretches 4 cm when a weight is added. What force is acting?

Answer 15

Gravity

Question 16

True or False: Friction can be useful and harmful.

Answer 16

True

Question 17

What energy transformation happens when a light bulb is turned on?

Answer 17

Electrical energy to light and heat energy

Question 18

What is the system called for naming species?

Answer 18

Binomial naming system

Question 19

Write the full binomial name for a human.

Answer 19

Homo sapiens

Question 20

What kingdom does a mushroom belong to?

Answer 20

Fungi

Question 21

What is the main difference between vertebrates and invertebrates?

Answer 21

Vertebrates have backbones, invertebrates do not

Question 22

Which group of animals lays eggs and has scales?

Answer 22

Reptiles

Question 23

What is a conductor?

Answer 23

A material that allows electricity or heat to flow

Question 24

What material property means ‘can be stretched into wire’?

Answer 24

Ductile

Question 25

Which property means it breaks easily when force is applied?

Answer 25

Brittle

Question 26

True or False: All plastics conduct electricity.

Answer 26

False

Question 27

Why is copper used in electrical wires?

Answer 27

Because it conducts electricity well and is ductile

Question 28

What causes day and night?

Answer 28

The rotation of the Earth

Question 29

How long does it take the Earth to orbit the Sun?

Answer 29

1 year (365 days)

Question 30

What is gravity?

Answer 30

A force that pulls objects towards each other

Question 31

True or False: The Moon produces its own light.

Answer 31

False

Question 32

What is the name for when the Moon blocks sunlight from reaching Earth?

Answer 32

Solar eclipse

Question 33

Name the force that keeps the planets in orbit.

Answer 33

Gravity

Question 34

What do we call organisms that make their own food?

Answer 34

Producers

Question 35

What is a consumer?

Answer 35

An organism that eats other organisms

Question 36

In a food chain, what comes after the producer?

Answer 36

Primary consumer

Question 37

True or False: Arrows in a food chain show the direction of energy flow.

Answer 37

True

Question 38

What type of change is melting — physical or chemical?

Answer 38

Physical

Question 39

Name a sign that a chemical reaction has happened.

Answer 39

Colour change, gas produced, temperature change

Question 40

What gas is produced when acid reacts with metal?

Answer 40

Hydrogen

Question 41

Is freezing water a reversible or irreversible change?

Answer 41

Reversible

Question 42

True or False: Burning wood is a physical change.

Answer 42

False

Question 43

What happens to mass in a closed system during a chemical reaction?

Answer 43

It stays the same (conservation of mass)

Question 44

What is the unit of current?

Answer 44

Ampere (A)

Question 45

What is needed to complete an electric circuit?

Answer 45

A power source, wires, and a closed path