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Dulce kenner Scince

Total questions: 21

Worksheet time: 11mins

Name
Class
Date
1.

If you increase the number of loops in a solenoid is one way to do what?

a)
Decrease the magnetic field strength
b)

increase or decrease the magnetic field strength.

c)
Increase the electrical resistance
d)
Decrease the number of windings in the solenoid
2.

Increasing the electric current in the wire is one way to do what?

a)
Decrease the strength of the magnetic field
b)
Reduce the resistance in the wire
c)
Create a gravitational field
d)

Make the magnet stronger

3.

In order for a material to be magnetic what has to be true of the material?

a)
The material must be a perfect insulator
b)
The material must be a liquid at room temperature
c)

If a majority of magnetic domains match spins, then that material is said to be magnetic.

d)
The material must be transparent to light
4.

What is an attraction or repulsion by spinning electrical charges?

a)
Magnetic force
b)
Electric current
c)
Gravitational force
d)
Static electricity
5.

How does a galvanometer make use of the relationship between electric current and magnetic fields?

a)
By using a glass tube filled with water and electrodes to measure the current
b)
By using a digital display to show the strength of the magnetic field
c)
By using a mechanical lever to detect changes in the electric current
d)

its movement is directly proportional to the intensity of the electric current in the circuit

6.

What is a coil of wire that has a soft iron core and that acts as a magnet when an electric current is in the coil?

a)
Electromagnet
b)
Iron conductor
c)
Magnetic insulator
d)
Electrical resistor
7.

A compass needle responds to a magnetic field, because the compass needle is a what?

a)

magnetic

b)
insulator
c)
conductor
d)
metal
8.

What is a magnetic pole?

a)
A magnetic pole is a term used in architecture to describe the support for a structure.
b)
A magnetic pole is a location on Earth where compasses do not work properly.
c)
A magnetic pole is a type of fishing equipment used to catch large fish.
d)
A magnetic pole is a point on a magnet where the magnetic force is concentrated.
9.

How can you make magnetic field lines visible?

a)
Using iron filings or a magnetic viewing film
b)
Using a microscope to observe the magnetic field
c)
Sprinkling water on the magnetic field
d)
Shining a UV light on the magnetic field
10.

What is a solenoid?

a)
A type of musical instrument
b)
A type of flower
c)
A type of cloud formation
d)
A coil of wire that produces a magnetic field when an electric current passes through it.
11.

What is a device that converts mechanical energy into electrical energy?

a)
Generator
b)
Microwave
c)
Toaster
d)
Refrigerator
12.

What did Faraday's experiments with magnets and electromagnetic induction demonstrate?

a)

mechanical energy can be converted to electric energy.

b)
Nuclear fission
c)
Thermoelectric effect
d)
Static electricity
13.

With of the flow, cannot demagnetize a magnet?

a)

  • Dropping the magnet frequently.

b)

  • Heating magnet to very high temperature.

c)

  • Hammering the magnet repeatedly

d)

  • Bringing the magnet in contact with the like poles of other magnets repeatedly.

e)

Washing a magnet

14.

What is a transformer?

a)
A transformer is a type of robot that can change shape and size.
b)
A transformer is a type of power tool used for cutting and shaping materials.
c)
A transformer is a type of weather phenomenon that occurs during thunderstorms.
d)

Increase or decreases the voltage of alternating current.

15.

What is created when a magnet moves through a coil or wire?

a)
Magnetic field
b)
Friction
c)
Heat
d)


Electromagnet


16.

What is a device that converts electrical energy into mechanical energy?

a)
mechanical generator
b)
power converter
c)
energy transformer
d)
electric motor
17.

What is a magnet?

a)
A magnet is a type of rock found in the earth's crust.
b)
A magnet is a type of animal that uses its magnetic field to navigate.
c)
A magnet is an object that produces a magnetic field and attracts certain materials like iron, nickel, and cobalt.
d)
A magnet is a type of plant that grows in regions with high iron content in the soil.
18.

What is the interaction between electricity and magnetism?

a)
Electromagnetic force
b)
Static electricity
c)
Electric magnetism
d)
Magnetic resistance
19.

What is electromagnetic induction?

a)
The process of generating a magnetic field across a conductor in a changing electric field.
b)
The process of generating a voltage across a conductor in a constant magnetic field.
c)

Electromagnetic Induction is a current produced because of voltage production (electromotive force) due to a changing magnetic field.

d)
The process of generating an electric field across a conductor in a changing magnetic field.
20.

As electrons move they make what?

a)
heat
b)
electric current
c)
sound
d)
magnetic field
21.

What is created when a wire moves between the poles of a magnet?

a)
Heat energy
b)
Static electricity
c)
Magnetic field
d)

current

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