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Physics > P6 - Molecules And Matter AND P11 - Wave Properties > Flashcards

P6 - Molecules And Matter AND P11 - Wave Properties Flashcards

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1
Q

The Density of a Substance is Defined as its ______ per Unit Volume.

A

Mass.

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2
Q

Density (__/__) = Mass (__) / Volume (__)

A

KG/M(cubed)…KG…M(cubed)…

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3
Q

To Measure the Density of a Solid or _________, Measure its Mass and Volume then use the Density.

A

Liquid.

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4
Q

Objects that have a Lower Density than ________ will Float in Water.

A

Water.

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5
Q

What is it called when a Solid turns into a Gas?

A

Sublimation.

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6
Q

How are Particles spaced in Solids?

A

Tightly Together.

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7
Q

How are Particles spaced in Liquids?

A

They move about Randomly.

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8
Q

How are Particles spaced in Gases?

A

They move about Randomly are far apart.

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9
Q

When a Substance changes State, it’s _______ stays the same because the Number of Particles stay the same.

A

Mass.

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10
Q

The Temperature at which a Solid changes to a Liquid is called the __________ Point.

A

Melting.

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11
Q

The Temperature at which a Liquid turns to a Gas is called the __________ Point.

A

Boiling.

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12
Q

The Temperature at which a Liquid changes to a Solid is called the ____________ Point.

A

Freezing.

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13
Q

What does the Flat Line of a Temperature-Time Graph give?

A

The Melting or Boiling Point of a Substance.

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14
Q

Energy Transferred to a Substance when it changes its State is called __________ Heat.

A

Latent.

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15
Q

Energy Stored by the Particles of a Substance is called the Substance’s _____________ Energy.

A

Internal.

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16
Q

Increasing the Temperature of a Substance _____________ its Internal Energy.

A

Increases.

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17
Q

The Strength of the Force of _____________ between the Particles of a Substance explains why it is a Solid, Liquid or Gas.

A

Attraction.

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18
Q

When a Substance is Heated, if its ______________ Rises, the Kinetic Energy of its Particles Increases.

A

Temperature.

19
Q

When a Substance is Heated, if it Melts or ______, the Potential Energy of its Particles Increases.

A

Boils.

20
Q

The Pressure of a Gas on a Surface is caused by the Particles of the Gas repeatedly hitting the __________.

A

Surface.

21
Q

Latent Heat is the _________ needed for a Substance to Change its State without changing its Temperature.

A

Energy.

22
Q

Specific Latent Heat of Fusion or Vaporisation is the Energy needed to Melt or Boil 1KG of a Substance without changing its _____________.

A

Temperature.

23
Q

Specific Latent Heat of Fusion (__/___) = Energy (__) / Mass (__)

A

J/KG…J…KG…

24
Q

What is the Equation for Latent Heat?

A

E = M x L.

25
Q

The Specific Latent Heat for Ice or Water can be Measured using a Low-Voltage ________ to Melt the Ice or Boil the Water.

A

Heater.

26
Q

The Pressure of Gas is caused by the Random Impacts of Gas ____________ on Surfaces that are in Contact with the Gas.

A

Molecules.

27
Q

If the Temperature of a Gas in a Sealed Container is Increased, the Pressure of the Gas Increases because…

A

…the Molecules move Faster, and the number of Hits on the Wall will Increase.

28
Q

Waves Transfer _________ without Transferring Matter.

A

Energy.

29
Q

What are Examples of Mechanical Waves?

A

Sound and Water Waves.

30
Q

What are Examples of Electromagnetic Waves?

A

Light, Radio and Microwaves.

31
Q

Waves can be used to Transfer _______________.

A

Information.

32
Q

Transverse Waves Oscillate _________________ to the Direction of Energy Transfers of the Waves.

A

Perpendicular.

33
Q

Mechanical Waves need a Substance to Travel through them. They can be Transverse or _______________ Waves.

A

Longitudinal.

34
Q

The Bigger the Amplitude of the Waves, the more _________ the Waves carry.

A

Energy.

35
Q

What is the Wavelength?

A

The Distance from Point to Point on a Wave.

36
Q

What is the Peak of the Wave?

A

The Top.

37
Q

What is the Trough of a Wave?

A

The Bottom.

38
Q

What is the Unit of Frequency Measured in for Waves?

A

Hertz (Hz).

39
Q

Period (__) = 1 / Frequency (__)

A

S…Hz…

40
Q

What is the Speed of a Wave?

A

The Distance Travelled by each Wave every Second.

41
Q

Wave Speed (__/__) = Frequency (__) x Wavelength (__)

A

M/S…Hz…M…

42
Q

Sound Waves are Vibrations that Travel through a _________.

A

Medium.

43
Q

Sound Waves cannot Travel through a _________.

A

Vacuum.

44
Q

How do you Investigate Waves?

A

A Ripple Tank for Water Waves, a Strectjed String for Waves in a Solid and a Loudspeaker for Sound Waves.

Physics (18 decks)

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