how quickly the temperature of an object falls

a line graph that shows how a cooling object’s temperature changes with time

a solid object has energy in its thermal store because its particles are vibrating

Cooling

Science

Measuring temperature

Changing temperature

Mixing substances of different temperatures

Thermal conductors

Thermal insulators

Energy and temperature

Energy and substance

In the Particle explanations of density and pressure unit, they will build on this knowledge to learn how the arrangement and movement of particles in solids, liquids and gases explain density, pressure, floating and convection.

In the Solids, liquids, gases and changes of state unit, pupils learnt to categorise solids, liquids and gases, how the particles are arranged and moving in each state and what happens to particles during a change of state.

This unit explains energy transfer between objects due to temperature differences, through conduction or radiation, the role of insulators, and thermal equilibrium. It covers particle arrangements and motions in solids, liquids, and gases and Brownian motion.

Heating and cooling

Physical activity and equipment requiring safe use

There is less water in the mug than the kettle.

The boiling water cools as it heats up the mug.

When boiling water is poured from a kettle into a mug, why is the temperature of the water in the mug always less than 100°C?

Decrease in temperature from start to finish.

Increase in temperature from start to finish.

Which of the following describes a cooling rate?

A cooling curve shows how a cooling object's temperature changes with {{}}.

The steeper the line, the faster the temperature is falling.

The steeper the line, the slower the temperature is falling.

The steepness of the line does not show how quickly the temperature is falling.

What does a steeper line on a cooling curve tell you about how quickly the temperature of a substance is falling?

Raising the temperature of water increases the amount of __________ it has.

When an object cools down, its energy is {{}} into the surroundings.

In a piece of pure copper, what is there in the tiny gaps between particles of copper?

Starting with the slowest, sort the following states of matter of water in order of increasing speed of the particles of water in each.

Using a triangular plastic cap on the end of it.

Which of the following options help to prevent a thermometer falling onto the floor between measurements in an investigation?

Starting with the weakest, sort the following states of matter of iron in order of increasing strength of the force holding particles together.

What is the approximate temperature of a classroom?

Match each of the following examples to the correct temperature.

Exit Quiz

When boiling water is poured from a kettle into a mug, why is the temperature of the water in the mug always less than 100°C?