untitled

The liquid in a thermometer ______________ as the temperature increases.

• expands
• disappears
• freezes
• explodes

The expanding of matter when it is heated is known as

• condensation

• evaporation

• thermal expansion

• vaporization

Many objects, such as train tracks and road joints, are specifically designed to allow extra space for ...

• thermal energy
• specific heat
• thermal expansion
• conductors

Water always expands as it's heated.

• True

• False

What is Thermal Contraction

• The movement of particles.

• A decrease in a materials volume when its temperature decreases

• The movement of fluids in a cycle because of convection

• A material through which thermal energy does not flow easily.

What is Thermal expansion?

• The transfer of thermal energy between materials by the collisions of particles 
• Is a decrease in a materials volume when temperature decreases 
• An increase in a materials volume when temperature increases
• Chicken fried rice

A bimetallic strip is made up of _____________________ welded together.

• two metals of the same kind 
• two different metals that expand and contract unequally
• two different metals that expand and contract equally

Expansion can be a problem in

• Power cable

• Railway tracks

• Fire alarm

Objects gain heat and _________. 

• expand
• contract

Choose the symbol which denotes the 'coefficient of expansion'

• θ
• ρ
• Σ
• α