Heat

What is the model used to describe matter in terms of liquids, solids and gases?

• The Molecule Model

• The Expansion Model

• The Particle Model

• The Substance Model

Heating a substance adds (a)   to its particles.

Select all options which apply:

When a solid substance is heated...

• It gains energy

• It contracts

• It increases in temperature

• It expands

Which direction will the heat flow while this person holds a hot cup of tea?

• from the cup to her hand
• from her hand to the cup
• no heat is transferred

Transfer of thermal energy through "space"

• conduction
• convection
• radiation

Tiny water droplets moving away from the hot coffee involve what type of energy transfer?

• convection

• radiation

• insulation

• conduction

Conduction occurs in...

• solids
• liquids
• gases

Select the correct option

• Heat always flows from an object of Higher temperature to one of Lower temperature

• Heat always flows from an object of Higher temperature to one of Higher temperature

• Heat always flows from an object of Lower temperature to one of Lower temperature

• Heat always flows from an object of Lower temperature to one of Higher temperature

Which are the three insulators

• Rubber

• Copper

• Cotton

• Wood

• Iron

Identify the main method of heat transfer:

Your feet get hot when you walk on the sand at the beach.

• Conduction

• Radiation

• Convection

• Insulation