# Corpus Christi Year 7 Making Changes

25 Questions | Total Attempts: 191  Settings  Making Changes Quiz

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• 1.
1.     A chair is dragged across four surfaces – lino, carpet, concrete and ice. Over which surface would the chair experience the LEAST friction?
• A.

(a) the lino

• B.

(b) the carpet

• C.

(c) the concrete

• D.

(d) the ice

• 2.
11.     If a force can act upon an object without touching it, what do we classify the force as?
• A.

The force is a contact force

• B.

The force does not exist

• C.

The force is a non-contact force

• D.

The force is unbalanced

• 3.
1.     Gravity can best be described as …
• A.

A force that pulls you towards the centre of the Earth

• B.

A force that pushes you downwards towards the Earth

• C.

A contact force

• D.

A force that creates heat

• 4.
1.     What is a force?
• A.

An animal

• B.

A push or a pull

• C.

A “Magnetic Field”

• D.

A measuring scale

• 5.
1.     What happens when you put two magnets together end to end?
• A.

North and North attract each other

• B.

North and North push each other away

• C.

North and South push each other away

• D.

South and South attract each other

• 6.
1.     If a paper clip and a piece of wood entered a magnetic field, what would happen?
• A.

The paper clip would stay still, and the wood would be attracted to the magnet

• B.

Both the paper clip and the wood would not move

• C.

The paper clip would be pushed out of the magnetic field

• D.

The paper clip would be attracted to the magnet, but the wood would not

• 7.
1.     Which of the following is an example of Electrostatic Force?
• A.

Holding a charged balloon above your hair, so your hair rises and sticks to the balloon

• B.

Falling downwards during a Bungee Jump

• C.

• D.

A magnet attracting a piece of iron

• 8.
1.     Which of the following is INCORRECT?
• A.

Forces can start objects moving

• B.

Forces can slow objects down

• C.

Forces can cause objects to change direction

• D.

Forces cannot bend or twist things

• 9.
1.     Which of the following is INCORRECT?
• A.

When the forces are balanced, there is no motion

• B.

When forces are unbalanced, there is motion

• C.

When you are sitting in a chair, the forces acting on you are balanced

• D.

When you jump off the ground, the forces acting on you are balanced

• 10.
1.     Forces are measured in Newtons. How many Newtons are required to move a 1 kg bag of sugar?
• A.

100 N

• B.

10 N

• C.

1 N

• D.

0.1 N

• 11.
1.     What are the names of the instruments we use to measure forces?
• A.

Spring balances, Newtonmeters and scales

• B.

Spring balances, rulers and a beaker

• C.

Spring balances, Force detector and scales

• D.

Spring balances, scales and a ruler

• 12.
1.     Which of the following is INCORRECT, in terms of friction?
• A.

Friction is a force that occurs when two surfaces move past each other

• B.

Friction does not oppose motion or movement

• C.

Ice is one of the few almost frictionless surfaces known to man

• D.

Friction keeps knots tied, and nails in place

• 13.
1.     Which of the following is NOT a method of reducing friction?
• A.

Using a lubricant such as oil or grease between the two moving surfaces

• B.

Blowing air between the two surfaces

• C.

Giving the surfaces a streamlined shape

• D.

Covering the surfaces in wax

• 14.
1.     Which of the following experiences the strongest Gravitational (Attractive) Force?
• A.

You and the Earth

• B.

The Moon and the Sun

• C.

The Earth and the Sun

• D.

The Earth and the Moon

• 15.
1.     Which of the following is TRUE?
• A.

People would weigh less on Jupiter than they would on Earth

• B.

People would weigh more on the Moon than they would on Earth

• C.

Both your mass and your weight changes when you go to the Moon

• D.

Only your weight changes when you go to the Moon. Your mass stays the same.

• 16.
1.     Which of the following is INCORRECT?
• A.

Some metals, such as iron, nickel and cobalt are attracted to magnets

• B.

Some metals, such as aluminium and zinc are not attracted to magnets

• C.

Materials that are attracted to magnets are said to be magnetic

• D.

All materials can be turned into magnets

• 17.
1.     Which of the following is TRUE?
• A.

The Earth does not have its own Magnetic Field

• B.

There is a giant magnet inside the Earth

• C.

Compasses rely on the Earth’s magnetic field to work

• D.

When you suspend a magnet by a thread, it lines up North to South

• 18.
1.     Aurora Australis (The Southern Lights) are caused by:
• A.

Chemical toxins in the air

• B.

Charged particles from the Sun, that are attracted to the South Pole

• C.

Fireworks

• D.

The Southern lights do not exist

• 19.
1.     There are two types of electric charges. They are:
• A.

Balanced and Unbalanced charges

• B.

Positive and Negative Charges

• C.

Positive and Neutral Charges

• D.

Balanced and Negative Charges

• 20.
1.     There are laws that tell us how Charged particles behave. Which of the following laws is INCORRECT?
• A.

Charged objects attract other charged objects

• B.

Two positive charges will repel each other

• C.

Two negative charges will repel each other

• D.

Two opposite charges will attract each other

• 21.
1.     Electric charges build up on objects due to the friction between them. The build up of these electric charges is called static electricity. The word “static” means:
• A.

Dangerous

• B.

Stationary

• C.

Moving

• D.

Safe

• 22.
1.     Electrostatic force is similar to Magnetic force. Which of the following do they NOT have in common?
• A.

Both forces have a field – an area in which the force will act on another object

• B.

Both forces are non-contact

• C.

Both forces are created by charged particles

• D.

Both forces can exert a push or a pull

• 23.
1.     When electric current flows through a wire, it produces a magnetic field. What is this effect called?
• A.

Electitis

• B.

Electromagenta

• C.

Solenoid

• D.

Electromagnetism

• 24.
1.     The magnetic field of a wire can be made stronger if the wire is wound in a coil, and a bar of iron is placed inside the coil. What name do we give this tightly coiled wire that produces a magnetic field?
• A.

Solenoid

• B.

Maglev

• C.

Newtonmeter

• D.

Van de Graaf Generator

• 25.
1.     Forces can:
• A.

Start and stop motion

• B.

Change the direction of motion

• C.

Speed up or slow down motion

• D.

All of the above