Physical Processes for Year 7 Science: Interactive Quizzes and Learning

Question 1

Which process causes a liquid to transform into a solid?

Accepted Answer

Freezing

Answer

Evaporation

Answer

Condensation

Answer

Melting

Question 2

When ice melts, what happens?

Accepted Answer

Ice changes from a solid to a liquid.

Answer

A new substance is formed.

Answer

The chemical composition of ice changes.

Answer

The ice gains or loses mass.

Question 3

Which of the following is NOT a physical state of matter?

Accepted Answer

Energy

Answer

Solid

Answer

Liquid

Answer

Gas

Question 4

What happens to a puddle of water when it vanishes on a warm day?

Accepted Answer

Evaporation

Answer

Freezing

Answer

Condensation

Answer

Sublimation

Question 5

When you notice water droplets forming on the surface of a cold glass containing water, which process is taking place?

Accepted Answer

Condensation

Answer

Melting

Answer

Evaporation

Answer

Sublimation

Question 6

Which of these processes does not involve a change in the state of matter?

Accepted Answer

Combustion

Answer

Evaporation

Answer

Melting

Answer

Freezing

Question 7

Which property is NOT characteristic of solids?

Accepted Answer

Ability to flow easily

Answer

Definite shape and volume

Answer

Tightly packed particles

Answer

Incompressibility

Question 8

Which process causes a solid to transform into a liquid?

Accepted Answer

Melting

Answer

Evaporation

Answer

Condensation

Answer

Freezing

Question 9

Which of these is NOT a property of matter that describes how it responds to heat?

Accepted Answer

Density

Answer

Thermal conductivity

Answer

Specific heat capacity

Answer

Thermal expansion

Question 10

When water boils, what phase change is occurring?

Accepted Answer

Liquid to gas

Answer

Solid to liquid

Answer

Gas to liquid

Answer

Liquid to solid

Question 11

When steam turns into ice, what is the process called?

Accepted Answer

Deposition

Answer

Evaporation

Answer

Condensation

Answer

Sublimation

Question 12

Which of these is a physical change?

Accepted Answer

Melting a block of ice

Accepted Answer

Dissolving salt in water

Answer

Burning a piece of paper

Answer

Rusting of iron

Question 13

What is the process called when liquid water slowly changes into water vapor?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Freezing

Answer

Sublimation

Question 14

When sugar is dissolved in water, what type of change has taken place?

Accepted Answer

Physical change, no new substance formed

Answer

Chemical change, forming a new substance

Answer

Nuclear change, atoms rearranged

Question 15

Which process involves a change in the chemical makeup of a substance?

Accepted Answer

Burning wood

Answer

Melting ice

Answer

Dissolving sugar in water

Question 16

You have a glass of water on your desk. What will happen to the water if you leave the glass uncovered on a sunny day?

Accepted Answer

Evaporate

Answer

Turn into ice

Answer

Condense

Answer

Sublime

Question 17

Dry ice left in the open air disappears without melting. Which physical process is this an example of?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Freezing

Question 18

When water turns from a liquid to a gas, what is the process called?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Freezing

Answer

Melting

Question 19

When salt is dissolved in water, what type of solution is formed?

Accepted Answer

Liquid solution

Answer

Solid solution

Answer

Gaseous solution

Question 20

When salt is dissolved in water, what type of mixture is formed?

Accepted Answer

Solution

Answer

Suspension

Answer

Colloid

Answer

Heterogeneous mixture

Question 21

Which of the following is a defining characteristic of a pure substance?

Accepted Answer

Fixed and unique composition

Answer

Variable composition

Answer

Ability to be separated into simpler substances by physical means

Answer

Existence in multiple states at the same time

Question 22

When you release a balloon filled with air, what makes it get bigger until it fills the room?

Accepted Answer

Expansion

Answer

Diffusion

Answer

Compression

Answer

Evaporation

Question 23

Why do solids have a definite shape and volume?

Accepted Answer

Strong intermolecular forces hold particles in fixed positions.

Answer

Weak intermolecular forces allow particles to move freely.

Answer

No intermolecular forces exist between particles.

Answer

Intermolecular forces are stronger in some directions than others.

Question 24

Which of these processes results in the creation of a new substance?

Accepted Answer

Burning wood

Answer

Melting ice

Answer

Freezing water

Answer

Boiling water

Question 25

When ice melts, what type of change takes place?

Accepted Answer

Physical change

Answer

Chemical change

Answer

Nuclear change

Answer

Biological change

Question 26

You're building a house in a cold area. Which material would be the best choice to keep the house warm because it conducts heat the least?

Accepted Answer

Wood

Answer

Metal

Answer

Glass

Question 27

When you combine salt and water, what kind of mixture do you create?

Accepted Answer

A solution

Answer

A pure substance

Answer

A mixture that is not uniform

Question 28

When water in a puddle evaporates on a sunny day, what happens to the water molecules?

Accepted Answer

They gain energy and move further apart in a gas state.

Answer

They lose energy and move closer together in a liquid state.

Answer

They stay the same and don't move.

Question 29

Which process involves a solid turning directly into a gas?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Deposition

Question 30

When salt is dissolved in water, what type of mixture is formed?

Accepted Answer

Solution

Answer

Suspension

Answer

Colloid

Question 31

What is the process called when a solid turns directly into a gas?

Accepted Answer

Sublimation

Answer

Melting

Answer

Evaporation

Question 32

Which process describes a solid changing directly into a gas, skipping the liquid phase?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Melting

Question 33

When a gas turns into a liquid, what is this process called?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Melting

Answer

Freezing

Question 34

What is the process where a solid changes directly into a gas?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Deposition

Question 35

How does temperature affect the speed of evaporation?

Accepted Answer

Evaporation speeds up as temperature increases.

Answer

Evaporation slows down as temperature increases.

Answer

Temperature has no impact on evaporation speed.

Answer

Evaporation slows down as temperature decreases.

Question 36

How do physical properties differ from chemical properties?

Accepted Answer

Physical properties describe a substance's appearance and behavior, while chemical properties describe how it changes when reacting with others.

Answer

Chemical properties describe a substance's appearance and behavior, while physical properties describe how it changes when reacting with others.

Answer

Both physical and chemical properties describe a substance's appearance and behavior.

Answer

Neither physical nor chemical properties describe a substance's appearance and behavior.

Question 37

How do intermolecular forces affect the physical characteristics of matter?

Accepted Answer

They influence the arrangement and spacing of molecules.

Answer

They determine the strength of the chemical bonds within the molecules.

Answer

They have no impact on the physical properties of matter.

Question 38

How does a rise in temperature affect the kinetic energy of molecules?

Accepted Answer

Kinetic energy increases.

Answer

Kinetic energy decreases.

Answer

Kinetic energy stays the same.

Question 39

When two objects are in thermal equilibrium, what happens to heat transfer?

Accepted Answer

No heat flows between the objects.

Answer

Heat flows from the hotter object to the colder object.

Answer

Heat flows from the colder object to the hotter object.

Answer

Heat flows in both directions between the objects.

Question 40

Which of the following is the stored energy in an object because of its position or shape?

Accepted Answer

Potential energy

Answer

Kinetic energy

Answer

Thermal energy

Answer

Chemical energy

Question 41

What is the SI unit that measures force?

Accepted Answer

Newton

Answer

Joule

Answer

Watt

Answer

Pascal

Question 42

Which of these formulas accurately describes the relationship between speed, distance, and time?

Accepted Answer

Distance = Speed * Time

Answer

Speed = Time/Distance

Answer

Time = Distance / Speed

Answer

Speed + Distance = Time

Question 43

What is the main difference between a chemical change and a physical change?

Accepted Answer

A chemical change involves rearranging atoms, while a physical change does not.

Answer

A physical change involves rearranging atoms, while a chemical change does not.

Answer

Both chemical and physical changes involve rearranging atoms.

Answer

Neither chemical nor physical changes involve rearranging atoms.

Question 44

What is the purpose of a catalyst in a chemical reaction?

Accepted Answer

To decrease the activation energy of the reaction.

Answer

To increase the activation energy of the reaction.

Answer

To change the products of the reaction.

Answer

To prevent the reaction from occurring.

Question 45

Which of the following is a chemical change?

Accepted Answer

Wood burning

Answer

Ice melting

Answer

Water boiling

Answer

Sugar dissolving in water

Question 46

Which of these materials conducts electricity?

Accepted Answer

Copper

Answer

Rubber

Answer

Glass

Answer

Plastic

Question 47

Which of these quantities is a vector?

Accepted Answer

Velocity

Answer

Temperature

Answer

Mass

Answer

Volume

Question 48

Which of these describes a characteristic of waves?

Accepted Answer

Transfers energy without transferring matter

Answer

Consists solely of particles

Answer

Can only move through solids

Answer

Exists without a wavelength

Question 49

Which gas is primarily responsible for causing the greenhouse effect?

Accepted Answer

Carbon dioxide

Answer

Nitrogen

Answer

Oxygen

Answer

Argon

Question 50

What is the unit used to measure force?

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter

Answer

Second

Question 51

Which of Newton's Laws of Motion states that an object at rest will remain at rest unless acted upon by an outside force?

Accepted Answer

Newton's First Law of Motion

Answer

Newton's Second Law of Motion

Answer

Newton's Third Law of Motion

Answer

Law of Conservation of Energy

Question 52

What type of force opposes the motion of an object?

Accepted Answer

Friction

Answer

Gravity

Answer

Magnetism

Answer

Air resistance

Question 53

Which material can allow electricity to flow through it?

Accepted Answer

Metal

Answer

Plastic

Answer

Wood

Answer

Rubber

Question 54

What device converts electrical energy into light energy?

Accepted Answer

Light bulb

Answer

Battery

Answer

Capacitor

Answer

Resistor

Question 55

Which process involves the transfer of heat through direct contact between objects?

Accepted Answer

Conduction

Answer

Convection

Answer

Radiation

Answer

Evaporation

Question 56

Identify the renewable energy source from the following options:

Accepted Answer

Solar energy

Answer

Coal

Answer

Oil

Answer

Natural gas

Question 57

What is the standard international unit of energy?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Volt

Question 58

As a ball is thrown vertically upwards, what happens to its velocity and potential energy at the highest point of its trajectory?

Accepted Answer

The ball has zero velocity and maximum potential energy

Answer

The ball has maximum velocity and zero potential energy

Answer

The ball has zero velocity and zero potential energy

Answer

The ball has maximum velocity and maximum potential energy

Question 59

Which energy source is renewable?

Accepted Answer

Solar energy

Answer

Coal

Answer

Natural gas

Answer

Nuclear energy

Question 60

When a solid turns directly into a gas, without first becoming a liquid, what is this process called?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Deposition

Question 61

Design an experiment to investigate how the strength of intermolecular forces affects the boiling points of liquids.

Accepted Answer

Compare the boiling points of liquids with different molecular weights.

Answer

Vary the temperature of the liquid while keeping the pressure constant.

Answer

Measure the volume of a liquid at its boiling point.

Question 62

Which of the following is NOT a type of force?

Accepted Answer

Inertia

Answer

Gravity

Answer

Friction

Answer

Magnetism

Question 63

What is the unit of measurement for energy?

Accepted Answer

Joule

Answer

Newton

Answer

Metre

Answer

Second

Question 64

Which of the following is an example of potential energy?

Accepted Answer

A stretched rubber band

Answer

A ball rolling down a hill

Answer

A flowing river

Answer

A burning candle