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Physical Science > Circuits and Magnestism > Flashcards

Circuits and Magnestism Flashcards

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1
Q

An electric circuit contains a _________ source

A

Energy

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2
Q

A _________ is often used as a energy source.

A

Battery

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3
Q

As chemicals react within a battery, the battery’s ________ terminal loses electrons, and its _______ terminal gains electrons.

A

Positive

Negative

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4
Q

When the terminals are connected in a closed circuit, electrons flow from the _________ terminal of a battery to the __________ terminal.

A

Negative

Positive

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5
Q

An electric circuit contains at least one electric _________ that transforms energy.

A

Device

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6
Q

Within a battery, _______ energy transforms into ________ into moving electrons.

A

Chemical

Kinetic

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7
Q

When electrons flowing in a conductor ________ with the atoms that make up the conductor, the electrons transform some of their __________ energy to the atoms.

A

Collide

Kinetic

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8
Q

An electric circuit contains _____ that connect its components.

A

Wires

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9
Q

Wires that connect its components of a circuit have ____ electric resistance.

A

Low

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10
Q

Only a small amount of electric energy is transformed into _______ energy by wires, which means that more energy is available for useful devices in the circuits.

A

Thermal

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11
Q

A(n) _________ is a enteric circuit that has only one closed path for an electric current to follow.

A

Series

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12
Q

Because there is only one path, when a series circuit is _______, all ________ turn off.

A

Open

Devices

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13
Q

Adding devices to a series circuit adds ______________ to the circuit and ____________ the current in the circuit.

A

Resistance

Decreases

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14
Q

A(n) __________ circuit is an electric circuit that has more than one closed path for an electric current to follow.

A

Parallel

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15
Q

Most circuits in homes are __________ circuits.

A

Parallel

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16
Q

In a parallel circuit, each ________ as its own path, or ________, that connects it to the source.

A

Device

Branch

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17
Q

If you _____ one branch of a parallel circuit, the current continues through other branches.

A

Open

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18
Q

Adding devices and branches to a parallel circuit __________ the total electric current through the __________.

A

Increases

Battery

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19
Q

Electric energy is generated at large __________ _________.

A

Power plants

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20
Q

Before entering your house through a main _____ passes through a(n) ____________ _________ which measures the __________ _________ used in your home.

A

Wire
Electric meter
Electric energy

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21
Q

_______ and circuit __________ are safety devices that keep the _________ from becoming to high.

A

Fuses
Breakers
Current

22
Q

An electric circuit transforms _________ energy of other forms of energy

A

Electric

23
Q

A(n) _______ is a safety device in an electric outlet that opens a circuit to stop current flow, which can help protect you from electric _______.

A

GFCI

Shock

24
Q

An electric shock occurs when a(n) _________ _______ passes through the _________ _______.

A

Electric current

Human body

25
Q

Ways to protect yourself from electric shock include staying away from _______ while using electric devices, avoiding using _______________ cords, and not contacting electric power _______.

A

Water
Extension
Lines

26
Q

A(n) _________ is an object that attracts the metal iron.

A

Magnet

27
Q

Magnets are in many _______ and sizes.

A

Shapes

28
Q

A(n) _________ _____ is a place on a magnet where the force it exerts is the strongest. Every magnet has _____ magnetic poles.

A

Magnetic pole

Two

29
Q

Any two magnets exert ______ on each other.

A

Forces

30
Q

Similar magnetic poles ______ each other, and opposite poles _______.

A

Repel

Attract

31
Q

The magnetic force becomes __________ as magnets move closer together and _________ as they move farther apart.

A

Stronger

Weaker

32
Q

Magnets can attract or repel each other even if they aren’t _________ because a(n) __________ _______ surrounds all magnets

A

Touching

Magnetic field

33
Q

Magnetic field lines have __________. The lines start at the ______ pole and end at the _______ pole.

A

Direction
North
South

34
Q

The lines are closer together at the magnet’s ________.

A

Poles

35
Q

The magnetic force is _________ where the lines are closest together.

A

Stronger

36
Q

When two bar magnets are brought together, the two magnetic fields __________.

A

Combine

37
Q

Earth is surrounded by a(n) _________ ______ due to _____ and nickel in Earth’s ______ _____.

A

Magnetic Field
Iron
Outer core

38
Q

A(n) __________ needle always aligns with the magnetic _______ ______ of a magnet.

A

Compass

Field Lines

39
Q

Earth’s magnetic field protects Earth from charged _________ from the ____.

A

Particles

Sun

40
Q

Sometimes large numbers of _________ from the ____ collect near the Earth’s magnetic poles.

A

Particles

Sun

41
Q

The particles collide with atoms of gases, causing the atmosphere to ______, forming shimmering sheets of color called _______.

A

Glow

Auroras

42
Q

A(n) __________ _______is any material that is strongly attracted to a magnet.

A

Magnetic field

43
Q

____________________ elements are elements hat have an especially strong attraction to magnets.

A

Ferromagnetic

44
Q

If the magnetic fields of the atom point in different directions, the magnetic fields _______ each other out, and the object is not a(n) __________.

A

Cancel

Magnet

45
Q

In magnetic material, atoms form groups, or magnetic _________.

A

Domains

46
Q

Within a domain, the __________ _____ of individual atoms point in the same direction.

A

Magnetic Field

47
Q

All of fields these atoms combine and form a magnetic _____ around the entire domain.

A

Field

48
Q

If the magnetic domains line up, their magnetic fields __________ with each other and the object is a(n) ________.

A

Combine

Magnet

49
Q

When a magnet comes near a magnetic material, the magnetic field around the magnet applies a force that causes the ____________ ________ in the material to align, magnetizing it.

A

Magnetic Domains

50
Q

A(n) __________ magnet quickly loses its magnetism after being removed from a magnetic field.

A

Temporary

51
Q

A magnet that remains a magnet after being removed from a magnetic field is a(n) _____________ magnet.

A

Permanent

Physical Science (3 decks)

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