Thermal Physics

Random Event [+1]

Raise your hand if you want to explain the difference between solid, liquid, and gas in front of the class!

Match

Match the following

solid

liquid

gas

• solid

• liquid

• gas

Multiple Choice

Why does only the top part of the lakes are frozen?

• The top part of the lake freezes due to the presence of hot springs
• The top part of the lake freezes due to exposure to warmer air temperatures
• The top part of the lake freezes due to exposure to colder air temperatures.
• The top part of the lake freezes due to the lake being shallow

Match

Match the following

• $$27^o\ C$$

• $$0^o\ C$$

• $$-273^o\ C$$

• $$227^o\ C$$

300 K

273 K

0 K

500 K

• 300 K

• 273 K

• 0 K

• 500 K

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What did you learn from the simulation?

Multiple Choice

A student inflates a balloon with helium then places it in the freezer. The student should expect

• the balloon's volume to increase

• the balloon's volume to decrease

• the balloon's number of molecules to increase

• the balloon's number of molecules to decrease

Multiple Choice

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

• The pressure will increase

• The pressure will decrease

• The pressure will remain constant

• The pressure will equalize

Multiple Choice

Boyle's law shows the volume and pressure of a gas are always ........

• inversely proportional 
• directly proportional 

Multiple Choice

Which of the following would increase the (gas) pressure of a system?

• Increase the Temperature
• Pump in more gas
• Decrease the volume
• All of these

Multiple Choice

An increase in the volume of a substance when the temperature increases is called ___________________________________.

• kinetic energy
• thermal expansion
• temperature
• heat

Multiple Choice

The liquid in a thermometer ______________ as the temperature increases.

• expands
• disappears
• freezes
• explodes

Multiple Choice

What happens to the molecules of a solid when it is heated?

• Slow down
• Speed up
• Don't change speed
• Shrink

Multiple Choice

What is Specific Heat?

• The  amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.
  
• The  amount of radiant energy required to increase the temperature of 1kgof a material by 1°C
• The  amount of energy required to increase the temperature of 1kgof a material by 1°C.
• The  amount of friction  required to increase the temperature of 1kgof a material by 1°C.

Multiple Choice

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?

• Copper
• Carbon Steel
• Zinc
• Stainless Steel

Multiple Choice

Which will heat up slower?

• water

• lead

• granite

• iron

Multiple Choice

No bubbles are formed.

• boiling

• evaporation

Multiple Choice

Happens throughout the liquid

• boiling

• evaporation

Multiple Choice

Happens at a fixed temperature

• boiling

• evaporation

Multiple Choice

In boiling, particles of a liquid get more heat energy.

• true

• false

Random Event [+1]

Raise your hand if you can explain the conduction, convection, and radiation!

Multiple Choice

If two objects have different temperatures, heat will flow from the cooler object to the warmer one.

• True
• False

Multiple Choice

Conduction is the transfer of thermal energy ___________.

• in the form of electromagnetic waves such as infrared radiation without the aid of a medium
• through a medium without any flow of the medium
• by means of convection currents in a fluid (liquid or gas), due to a difference in density
• None of the above

Multiple Choice

Which material is the best conductor of heat?

• Wood
• Plastic
• Glass
• Steel

Multiple Choice

Convection can take place in _________________.

• solids only

• liquids only

• liquids and gases only

• solids, liquids and gases

Multiple Choice

The diagram shows some rice being boiled in a pan. What is the main methods by which thermal energy is transferred (i) through the metal pan and

(ii) through the water?

• (i) conduction (ii) conduction

• (i) convection (ii) convection

• (i) conduction (ii) convection

• (i) convection (ii) conduction

Multiple Select

What is convection ? (Choose all answers that apply)

• method of transfer of heat in fluids

• method of transfer of heat in solids

• transfer of heat due to movement of molecules

• transfer of heat due to vibration of molecules

Multiple Choice

The three cans were all filled with boiling water they were left for ten minutes and then the temperature of the water was measured again. In which can would the water temperature be the lowest?

• A
• B
• C
• There would be no difference.

Multiple Choice

Infrared radiation cannot pass through a vacumn (T/F)

• True
• False

Multiple Choice

Which of the following is best at reflecting infrared radiation?

• Dark, matt surface
• Light, shiny surface
• Dark, shiny surface

Multiple Choice

Which of the following is the best at absorbing infrared radiation?

• Dark, matt surface
• Light, shiny surface
• Dark, shiny surface