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Science Quiz

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

What is the chemical symbol for sodium?

a)

So

b)

Na

c)

S

d)

Sd

2.

What is the primary gas found in the Earth's atmosphere?

a)

Oxygen

b)

Carbon Dioxide

c)

Nitrogen

d)

Helium

3.

Which part of the atom has a positive charge?

a)

Electron

b)

Neutron

c)

Proton

d)

Nucleus

4.

What is the process of a liquid turning into a gas called?

a)

Condensation

b)

Evaporation

c)

Sublimation

d)

Freezing

5.

What is the unit of force in the metric system?

a)

Joule

b)

Newton

c)

Pascal

d)

Watt

6.

Which planet is known as the Red Planet?

a)

Venus

b)

Jupiter

c)

Mars

d)

Saturn

7.

What is the boiling point of water at sea level?

a)

90°C

b)

150°C

c)

100°C

d)

120°C

8.

What is the centre of an atom called?

a)

Proton

b)

Neutron

c)

Electron

9.

What do you call a substance made up of only one type of atom?

a)

Compound

b)

Mixture

c)

Element

d)

Solution

10.

What is the chemical formula for water?

a)

CO2

b)

H2O

c)

O2

d)

H2

11.

What is the most abundant element in the universe?

a)

Oxygen

b)

Carbon

c)

Hydrogen

d)

Helium

12.

What kind of bond involves the sharing of electron pairs between atoms?

a)

Ionic

b)

Covalent

c)

Metallic

d)

Hydrogen

13.

What is the speed of light in a vacuum?

a)

3,000 km/s

b)

30,000 km/s

c)

300,000 km/s

d)

3,000,000 km/s

14.

Which element is used in pencils?

a)

Lead

b)

Carbon

c)

Graphite

d)

Silicon

15.

What is the pH level of pure water?

a)

7

b)

1

c)

14

d)

0

16.

What is another name for the force of gravity?

a)

Magnetic Force

b)

Nuclear Force

c)

Electromagnetic Force

d)

Weight

17.

Which gas is essential for the process of photosynthesis?

a)

Nitrogen

b)

Oxygen

c)

Carbon Dioxide

d)

Hydrogen

18.

What is the hardest natural substance on Earth?

a)

Steel

b)

Diamond

c)

Iron

d)

Quartz

19.

What does DNA stand for?

a)

Deoxyribonucleic Acid

b)

Dinuclear Acid

c)

Deoxynuclear Acid

d)

Dinucleic Acid

20.

What occurs when a material is stretched and returns to its original shape?

a)

Elasticity

b)

Plasticity

c)

Viscosity

d)

Rigidity

21.

Which type of electromagnetic radiation has the longest wavelength?

a)

Gamma Rays

b)

X-Rays

c)

Ultraviolet

d)

Radio Waves

22.

What is the main component of natural gas?

a)

Ethane

b)

Methane

c)

Propane

d)

Butane

23.

What is the primary function of red blood cells?

a)

Fight infections

b)

Carry oxygen

c)

Remove waste

24.

What is the atomic number of carbon?

a)

8

b)

6

c)

12

d)

4

25.

What does the law of conservation of mass state?

a)

Mass cannot be created or destroyed

b)

Mass can be converted into energy

c)

Mass increases with speed

d)

Mass decreases with temperature

26.

What is the name of the force that opposes motion between two surfaces?

a)

Gravity

b)

Magnetism

c)

Friction

d)

Tension

27.

Which light phenomenon explains why the sky is blue?

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Scattering

28.

What is the chemical symbol for gold?

a)

Go

b)

Au

c)

Ag

d)

Gd

29.

What is the main element in the Earth's core?

a)

Nickel

b)

Iron

c)

Copper

d)

Aluminium

30.

What is the name of the process in which plants make their own food?

a)

Respiration

b)

Digestion

c)

Photosynthesis

d)

Fermentation

31.

What is the primary cause of tides on Earth?

a)

Wind

b)

Sun's Gravity

c)

Moon's Gravity

d)

Earth's Rotation

32.

What is the pH range of acids?

a)

0 to 7

b)

7 to 14

c)

7

d)

14 to 21

33.

What is the SI unit of temperature?

a)

Celsius

b)

Fahrenheit

c)

Kelvin

d)

Rankine

34.

Which of the following is a noble gas?

a)

Oxygen

b)

Nitrogen

c)

Argon

d)

Carbon

35.

What is the chemical formula for table salt?

a)

NaCl

b)

KCl

c)

MgCl2

d)

CaCl2

36.

Who is known as the father of modern physics?

a)

Isaac Newton

b)

Albert Einstein

c)

Galileo Galilei

d)

Nikola Tesla

37.

What is the primary component of the Sun?

a)

Helium

b)

Hydrogen

c)

Carbon

d)

Oxygen

38.

Which material is known as a semiconductor?

a)

Copper

b)

Silicon

c)

Silver

39.

What is the process of splitting a nucleus into smaller parts called?

a)

Fusion

b)

Fission

c)

Ionisation

d)

Condensation

40.

What is the main function of chlorophyll in plants?

a)

Absorb water

b)

Absorb light

c)

Absorb nutrients

d)

Absorb carbon dioxide

41.

What is the chemical symbol for iron?

a)

Ir

b)

In

c)

Fe

d)

I

42.

What is the molecular formula for ozone?

a)

O

b)

O2

c)

O3

d)

O4

43.

What type of chemical reaction releases heat?

a)

Endothermic

b)

Exothermic

c)

Isothermal

d)

Adiabatic

44.

What is the unit of electric current?

a)

Volt

b)

Ohm

c)

Ampere

d)

Watt

45.

What is the name of the device that measures atmospheric pressure?

a)

Thermometer

b)

Barometer

c)

Hygrometer

d)

Anemometer

46.

What element is used in light bulb filaments?

a)

Copper

b)

Aluminium

c)

Tungsten

d)

Silver

47.

What is the term for the amount of matter in an object?

a)

Volume

b)

Mass

c)

Density

d)

Weight

48.

Which planet has the most extensive ring system?

a)

Jupiter

b)

Uranus

c)

Saturn

d)

Neptune

49.

What is the most reactive metal in the periodic table?

a)

Lithium

b)

Sodium

c)

Potassium

d)

Francium

50.

Which law states that the angle of incidence is equal to the angle of reflection?

a)

Snell's Law

b)

Newton's First Law

c)

Law of Reflection

d)

Coulomb's Law

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