24 Questions  Settings  This quiz will test your knowledge on 3 major topics covered in Secondary four science: Energy, Electricity and Magnetism. You must get a minimum of 70% to pass, good luck! :)

Related Topics
• 1.
Energy is the ability to do work. There are many different types of energy such as; elastic, radiant, kinetic, chemical, nuclear,etc.We can calculate energy efficiency by using the formula -> useful/consumed x 100. The law of conservation of energy states that energy can neither be created nor destroyed, only transferred or transformed. Another important note is the difference between heat and temperature. Heat is the speed and mass of particles, while temperature refers only to the speed of articles.You will now answer 8 questions on energy before you can move on to the next topic.Good luck! :)
• 2.
Which is correct formula for energy efficiency?
• A.

Energy efficiency = amount of useful energy/ amount of energy consumed x100

• B.

Energy efficiency = amount of energy consumed/ amount of useful energy x100

• C.

Energy efficiency = amount of useful energy/ amount of energy consumed x10

• D.

Energy efficiency = amount of energy consumed/ amount of useful energy x10

• 3.
Kinetic and Potential energy together create Mechanical energy.
• A.

True

• B.

False

• 4.
Temperature refers to...
• A.

The speed of particles

• B.

The speed and mass of particles

• C.

The mass of particles

• 5.
Select the existing forms of energy
• A.

Chemical

• B.

Elastic

• C.

Joules

• D.

Nuclear

• 6.
The law of conservation of energy states that:
• A.

Energy can be created but not destroyed.

• B.

Energy can be created and destroyed.

• C.

Energy can not be created, only destroyed.

• D.

Energy can neither be created nor destroyed.

• 7.
If the number of particles increases then the thermal energy will:
• 8.
An electric hoist supplies 5000 J of energy when it lifts a load. It has the efficiency of 60%, how much useful work is done on the load?*Hint: use the formula for energy efficiency.
• 9.
Electricity is the flow of moving electrons. Static electricity describes all the phenomena related to electrical charges at rest. Contrary to this, dynamic electricity refers to all the phenomena related to electrical charges in motion. Matter can be charged one of three ways: friction, conduction or induction. It is also important to know that protons are positive, neutrons are neutral and that electrons are negative.You will now answer 8 questions on electricity before you can move on to the next topic.Good luck! :)
• 10.
Static electricity describes the phenomenon related to electrical charges in motion.
• A.

True

• B.

False

• 11.
An alloy is a combination of:
• A.

An insulator and consuctor

• B.

A metal and non metal

• C.

Two non metals

• D.

A conductor and electrical current

• 12.
Name one of the ways that matter can be charged.
• 13.
Choose the materials that would make good conductors
• A.

Copper

• B.

Aluminum

• C.

Glass

• D.

Rubber

• E.

Nickle

• 14.
In an electrical circuit an ammeter is used to measure:
• 15.
Select the characteristics of a good conductor of electricity.
• A.

Short

• B.

Warm

• C.

Cold

• D.

Copper

• E.

Long/ skinny

• F.

Plastic

• G.

Heavy

• 16.
Electrons are positive.
• A.

True

• B.

False

• 17.
Magnetism describes all the phenomena caused by magnets. In order for an object to be considered a magnet it must contain iron, cobalt or nickel, all of its domains must be aligned and it must have a north and south pole. The north and south poles are the strongest parts of a magnet. A rule to remember is that opposites attract and likes repel. A ferromagnetic substance has the potential to become a magnet, we can also demagnetize objects. There are 2 types of magnets, temporary and permanent. Another important rule to remember when dealing with the magnetic field is the right hand rule.This is the last section, you will now answer 8 questions on magnetism, then proceed to the results.Good Luck! :)
• 18.
A magnet is an object that can attract other objects containing :
• A.

Zinc

• B.

Cobalt

• C.

Plastic

• D.

Iron

• E.

Nickel

• 19.
What is the strongest point of a magnet?
• 20.
A Ferromagnetic Substance is a substance with the ability to acquire magnetic properties. True or False
• A.

True

• B.

False

• 21.
When referring to the “Right hand rule” the thumb is used to show the:
• A.

Current direction.

• B.

Direction of the magnetic field lines.

• 22.
Choose the rules of the magnetic forces of attraction and repulsion:
• A.

Opposites repel

• B.

Magnets can be monopole

• C.

Opposites attract

• D.

Likes repel

• E.

Likes attract

• 23.
A magnetic currents flows from positive to negative
• A.

True

• B.

False

• 24.
Choose a criteria necessary for a substance to be considered a magnet?
• A.

Domains must be aligned

• B.

Must be warm

• C.

Larger than 10cmx10cm