Froggy Jumps: ELECTRICITY AND MAGNETISM (física - 3º e.s.o.


Froggy Jumps ELECTRICITY AND MAGNETISMVersion en ligne Repaso par Sandra Lopez Romero 1 In an atom, electrons are the particles that orbit the nucleus. a True b False c 2 Electric current is produced when protons and neutrons repel each other. a True b False c 3 A stable atom has the same number of electrons as protons. a True b False c 4 Electrons attract each other because they have the same electrical charge. a True b False c 5 In an electric circuit, electricity flows through the wires from the battery to the battery a True b False c 6 Inside storm clouds, ice particles bump into each other and become electrically charged. a True b False c 7 Lightning is a form of static electricity. a True b False c 8 When you comb your hair, the comb pulls neutrons off the hair molecules. a True b False c 9 Electric current can easily be stored. a True b False c 10 Electricity is a very safe type of energy. a True b False c 11 Which pole of a magnet attracts the north pole of another magnet? a North Pole b South Pole c 12 Which metal will a magnet attract? a steel b gold c 13 What can we use to show the magnetic field of a magnet? a iron filings b water c 14 How do we represent the direction of the force in a magnetic field? a with circles b with arrows c 15 What can we use to test if an object is a magnet? a a paperclip b another magnet c 16 The north pole of the magnetosphere is at the geographical South Pole. a True b False c 17 The centre of the Earth is made up of magnetised, solid iron. a True b False c 18 The magnetosphere protects us from the Sun. a True b False c 19 We can use a compass to find the magnetic north and south poles of the Earth. a True b False c 20 A compass needle is made of gold or silver. a True b False c 21 Who discovered the connection between magnetism and electricity? a Faraday b Oersted c 22 What did Ampere do? a He discovered the electrodynamic molecule. b He invented the first electric motor. c 23 What name do modern scientists use instead of "electrodynamic molecule"? a electromagnetic rotary device b electron c 24 What modern electric machine is based on Faraday´s work? a the dynamo b the television c 25 What effect does an electric current have on a compass needle? a It moves it. b It produces light energy. c 26 Does an electric bell need electric current to work? a yes b no c 27 Does a Maglev have wheels? a yes b no c 28 Does the track for the Maglev need magnets on both sides? a yes b no c 29 Does a speaker transform electric current into sound? a yes b no c 30 Does a microphone transform electric current into sound? a yes b no c 31 Who discovered the electron? a Oersted b Faraday c 32 What chemical effect does electricity have? a electrolysis b thermal energy c

1

In an atom, electrons are the particles that orbit the nucleus.

a

True

b

False

c

2

Electric current is produced when protons and neutrons repel each other.

a

True

b

False

c

3

A stable atom has the same number of electrons as protons.

a

True

b

False

c

4

Electrons attract each other because they have the same electrical charge.

a

True

b

False

c

5

In an electric circuit, electricity flows through the wires from the battery to the battery

a

True

b

False

c

6

Inside storm clouds, ice particles bump into each other and become electrically charged.

a

True

b

False

c

7

Lightning is a form of static electricity.

a

True

b

False

c

8

When you comb your hair, the comb pulls neutrons off the hair molecules.

a

True

b

False

c

9

Electric current can easily be stored.

a

True

b

False

c

10

Electricity is a very safe type of energy.

a

True

b

False

c

11

Which pole of a magnet attracts the north pole of another magnet?

a

North Pole

b

South Pole

c

12

Which metal will a magnet attract?

a

steel

b

gold

c

13

What can we use to show the magnetic field of a magnet?

a

iron filings

b

water

c

14

How do we represent the direction of the force in a magnetic field?

a

with circles

b

with arrows

c

15

What can we use to test if an object is a magnet?

a

a paperclip

b

another magnet

c

16

The north pole of the magnetosphere is at the geographical South Pole.

a

True

b

False

c

17

The centre of the Earth is made up of magnetised, solid iron.

a

True

b

False

c

18

The magnetosphere protects us from the Sun.

a

True

b

False

c

19

We can use a compass to find the magnetic north and south poles of the Earth.

a

True

b

False

c

20

A compass needle is made of gold or silver.

a

True

b

False

c

21

Who discovered the connection between magnetism and electricity?

a

Faraday

b

Oersted

c

22

What did Ampere do?

a

He discovered the electrodynamic molecule.

b

He invented the first electric motor.

c

23

What name do modern scientists use instead of "electrodynamic molecule"?

a

electromagnetic rotary device

b

electron

c

24

What modern electric machine is based on Faraday´s work?

a

the dynamo

b

the television

c

25

What effect does an electric current have on a compass needle?

a

It moves it.

b

It produces light energy.

c

26

Does an electric bell need electric current to work?

a

yes

b

no

c

27

Does a Maglev have wheels?

a

yes

b

no

c

28

Does the track for the Maglev need magnets on both sides?

a

yes

b

no

c

29

Does a speaker transform electric current into sound?

a

yes

b

no

c

30

Does a microphone transform electric current into sound?

a

yes

b

no

c

31

Who discovered the electron?

a

Oersted

b

Faraday

c

32

What chemical effect does electricity have?

a

electrolysis

b

thermal energy

c

ELECTRICITY AND MAGNETISM

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