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1

Equations for speed, Pressure and density

Speed = distance/time

Pressure = force/area

Density = mass/volume

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2

Define Specific Heat Capacity

Specific heat capacity is the amount of energy required to raise the temperature of 1 kg of a substance by 1 ยฐC.

However, can be the amount of energy released by a substance as it cools.ย

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3

What is the equation to calculate SHC

Energy = mass x SHC x change in temp

SHC = Energy/(mass x change in temp)

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4

Define Specific Latent Heat

The specific latent heat is the energy required to change 1kg of a particular substance from one state to another, without a change in temperature.

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5

Difference between latent heat of fusion and vaporisation

The specific latent heat of refers to when a substance changes from a solid to a liquid (or vice versa)

The specific latent heat of refers to when a substance changes from a liquid to a gas (or vice versa)

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6

Equation for SLH

Energy transferred = mass x SLH

SLH = Energy transferred/mass

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7

Define power with the equation

Power- amount of energy transferred per second

Power = energy/time

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8

How temperature affects pressure of a gas

In a container of fixed volume, if temperature increases, particles have more kinetic energy. There are more frequent collisions with the sides of the contain with more force so pressure increases

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9

How does volume affect pressure of gas

In a container of fixed temperature, if volume increases, average distance a particle travels increases so there are less frequent collisions between particles and container wall so pressure decreases

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10

What is the atmosphere made of

Nitrogen

Carbon Dioxide

Oxygen

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11

Relationship between altitude and pressure

As elevation/altitude increases, the atmospheric pressure decreases

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12

Equation for liquid pressure

Pressure = density of a liquid x gravitational field strength x height

P = p x g x h

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13

What is upthrust caused by

The pressure on the bottom of the object being greater than the pressure on the top of the object

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