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Worksheets

Science Knowledge

Total questions: 32

Worksheet time: 17mins

Name
Class
Date
1.

A life scientist who observes the relationships between plants, animals, weather and soil on a mountaintop is studying a(n)

a)

community

b)

ecosystem

c)

population

d)

organism

2.

Which of the following statements best describes the composition of air?

a)

air is only made up of nitrogen

b)

air is only made up of oxygen

c)

air is only made up of carbon dioxide

d)

air is made up of a mixture of different gasses

3.
What can you find by working through the statements of a dichotomous key?
a)
how long a fungus can live
b)
when a species first appeared on Earth
c)
the scientific name of an organism
d)
how many animals are birds
4.

What causes the seasons?

a)

Earth's tilt of its rotational axis

b)

The distance between the Earth and the Sun.

5.

Antibiotics kill viruses as well as bacteria.

a)

True

b)

False

6.

Lasers work by focusing sound waves.

a)

True

b)

False

7.

Electrons are smaller than atoms.

a)

True

b)

False

8.

All radioactivity is man-made.

a)

True

b)

False

9.

Which of the following is correct?

a)

The Sun goes around the Earth

b)

The Earth goes around the Sun

10.

The continents move and will continue to move.

a)

True

b)

False

11.

The center of the Earth is hotter than its surface.

a)

True

b)

False

12.

Humans are about ______% water.

a)

85

b)

32

c)

58

d)

45

e)

29

13.

What is the biggest planet in our solar system?

a)

Venus

b)

The Earth

c)

Jupiter

d)

Mars

14.

What is the chemical symbol for the element oxygen?

a)

O

b)

Ox

c)

O2

d)

Os

15.

DNA is the shortened form of the term ‘Deoxyribonucleic acid’?

a)

True

b)

Flase

16.

What famous scientist was awarded the 1921 Nobel Prize in Physics for his work on theoretical physics?

a)

Isaac Newton

b)

Stephen Hawking

c)

Pierre Currie

d)

Albert Einstein

17.

The smallest particle of an element that can exist is called

a)

Nucleus

b)

Atom

c)

Cell

d)

Molecule

18.

The common cold is caused by a bacterium

a)

True

b)

False

19.

What is the process that results in the phase transition of a substance from a solid to a liquid called?

a)

Melting

b)

Solidification

c)

Condensation

d)

Evaporation

20.

Whant kind of mixture is the sea water?

a)

Heterogenous mixture

b)

Homogenous mixture

21.

Which metal is NOT magnetic?

a)

Iron

b)

Gold

c)

Cobalt

d)

Nickel

22.

What is the name we give to an elongated worm-like larva of a butterfly or moth?

a)

Eggs

b)

Caterpillar

c)

Chrysalis

d)

Praying mantis

23.

Gorillas are:

a)

Herbivores

b)

Omnivores

c)

Carnivores

d)

Poisonous

24.

How many carats are there in pure gold?

a)

18

b)

20

c)

24

d)

22

25.

'Mach One' refers to speed of:

a)

Sound

b)

Light

c)

Darkness

d)

Gravity

26.

Planet Earth is the ______ planet from the Sun.

a)

Second

b)

Third

c)

Fourth

d)

First

27.

Which Creature's bite can lead to Lyme disease?

a)

Tick

b)

Flea

c)

Komodo dragon

d)

Rattlesnake

28.

What do herpetologists study?

a)

Mammals

b)

Fish

c)

Reptiles and amphibians

d)

Birds

29.

What do Mitochondria produce?

a)

PTA

b)

TAP

c)

ATP

d)

PAT

30.

What do the rings around Saturn mostly consist of?

a)

Fire

b)

Ice

c)

Diamond

d)

Sand

31.

What is the largest flower in the world?

a)

Bluebell

b)

Rafflesia

c)

Daisy

d)

Daffodi

32.

What is the name of the organ in our bodies that pumps blood?

a)

Liver

b)

Heart

c)

Brain

d)

Stomach