How do you calculate pressure?
\[\text{pressure}=\text{weight}\times\text{area}\]
\[\text{pressure}=\frac{\text{mass}}{\text{area}}\]
\[\text{pressure}=\frac{\text{force}}{\text{area}}\]
How can you increase pressure?
Reduce surface area
Increase surface area
Reduce force
Which is the most commonly used temperature scale?
Fahrenheit
Kelvin
Celsius
What is the lowest temperature possible in the Celsius scale?
-272 degrees
-273 degrees
-274 degrees
In which temperature scale are there no minus numbers?
What happens to gases in a fixed container when their temperature increases?
Their volume increases
Their pressure decreases
Their pressure increases
What happens to gases in a fixed container when their pressure decreases?
Their volume decreases
The temperature decreases
The temperature increases
For a gas in a sealed container, what else always increases as a result of an increase in temperature?
The speed of the particles
The size of the particles
The size of the container
What is thermal capacity measured in?
Joules per Kelvin
Joules per Celsius
Grams per Celsius
What is specific latent heat?
The heat energy needed to freeze 1 kg of a substance
The heat energy needed to evaporate 1 kg of a substance
The heat energy needed to melt or boil 1 kg of the substance