8-2023/6/11

Which of the following terms represents the sum of the kinetic and potential energies of the molecules within a matter?

•     Temperature

• Thermal Capacity

•        Heat

     

•   Intrinsic Energy

How can you melt a cube of ice?

• Put some salt on ice.

• Apply force on ice.

• Put ice into a glass of hot water.

• all of them

Internal energy can be__________ with heat.

    

• Decrease

• Increase

• Remain same

• None of them

Solids expand _______.

    

• Faster

• Slower

• very slow

• All

At high altitudes, ______boils below 100 °C.

   

•   Water

• Solids

• Gas

• Plasma

Heat is transferred energy from .................... object to .................... one.

    

• Hot to colder

• Colder to hot

• Solids to liquid

• Liquid to gase

The ......................... is the most effective way of heat transmission in solids.

    

•   Convection

• Radiation

• Conduction

• Radiation

Objects which can transfer heat are called:

    

• Conductors

• Insulators

•   Semiconductors

• Non of them

Objects which cannot transfer heat are called:

     

•   Conductors

•   Insulators

• Semiconductors

• Non of them

Matter is found in ­_____ fundamental states.

• 3

• 4

• 5

• 6