Thermal Physics

Match

Match the following

solid

liquid

gas

• solid

• liquid

• gas

Multiple Choice

Which state of matter is represented in the following diagram?

• Liquid

• Liquid and gas

• Gas

• Solid

Multiple Choice

Which of the following states is correct?

• Gases cannot be compressed.

• Solids are easily compressed.

• Gases are easier to compress than solids.

• Liquids cannot be compressed or expanded.

Multiple Choice

Define a liquid.

• Indefinite shape, indefinite volume
• Definite shape, definite volume
• Found in stars
• Definite volume, indefinite shape

Multiple Choice

Which form of matter has a definite shape and takes up space (has definite volume)?

• liquid

• solid

• gas

• clay

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

Multiple Choice

Kelvin = Celsius + 273

So K = C + 273

What is K if temperature is 25 deg C

• 273 K

• 203K

• 298 K

• 0 K

Multiple Choice

K = C + 273

What is Kelvin temperature if Celsius (C) temperature is 20 deg

• 0 K

• 20 K

• 300 K

• 293 K

Multiple Choice

K = C + 273 or (solve for C) C = K - 273

What is C (Celsius temp) if K = 200

• -73 C

• 0 C

• 100 C

• -40 C

Multiple Choice

C = K - 273

What is C if the K temperature is 100

• 0 C

• -173 C

• 200 C

• 173 C

Multiple Choice

What substance was used to study particle behavior in liquids in the 1820s?

• pollen
• oil
• ice
• carbon powder

Multiple Choice

Pollen grains suspended in water exhibit Brownian motion. How do they move?

• In smooth curves

• Randomly

• Orderly with a pattern

• In straight lines with no change of direction

Multiple Choice

Which of the following does NOT describe Brownian motion?

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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

A sample of hydrogen at 1.5 atm had its pressure decreased to 0.50 atm producing a new volume of 750 mL. What was its original volume?

• 245 ml

• 345 ml

• 123 ml

• 250.mL

Multiple Choice

1. A sample of carbon dioxide occupies a volume of 3.50 liters at 125 kPa pressure. What pressure would the gas exert if the volume was decreased to 2.00 liters?

• 219 KPa

• 222 KPa

• 567 KPa

• 654 KPa

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

Which will heat up faster?

• copper

• granite

• iron

• basalt

Multiple Choice

If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest?

• 100 mL
• 1000 mL
• They both heat up at the same speed
• They cool down.

Multiple Choice

How much energy is needed to raise the temperature of 5.0 grams of lead from 25°C to 35°C? [specific heat (c) = 0.129 J/(g•°C)]

• 6.45 J/(g•°C)

• 6.45 J

• 16.1 J/(g•°C)

• d.16.1 J

Multiple Choice

The temperature of a 6.0 g sample of glass changed from 20.0°C to 45.0°C when it absorbed 550 J of heat. What is the specific heat of this glass?

• 0.27 J/g °C

• 3.7 J/g °C

• 130 J/g °C

• 12 J/g °C

Multiple Choice

What is happening at D?

• Liquid changing state into a gas - potential energy of particles is constant

• Liquid being heated - kinetic energy of particles is increasing

• Liquid being heated, temperature remains constant as there is no energy transfer

• Liquid changing state into a gas - temperature of substance remains constant

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

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