WorksheetsThermal Properties Review
Total questions: 15
Worksheet time: 8mins
Thermal conductivity measures...
how hot or cold a substance is
how quickly thermal energy moves through a substance
how easily a substance bends
the temperature of a substance
Which of these materials has the lowest thermal conductivity?
air
copper
gold
diamond
Thermal insulators are important for picking up hot items because they...
transfer thermal energy quickly to your hands
cool down the items they touch
heat up the items they touch
transfer thermal energy slowly to your hands
A tile floor can feel cool to your feet because it...
always has a low temperature
makes your feet become colder
transfers thermal energy out of your feet quickly
has a hard surface
The heat capacity of a substance measures...
its temperature
how hot it can become
whether it will change into a gas or not
how much thermal energy is needed to raise its temperature
True or False: If a substance has a low heat capacity, it will take a smaller amount of thermal energy to change its temperature.
True
False
Why does the sand on a beach feel warmer than the water, after the sun has been shining on both?
the sand is not actually warmer; it only feels that way
the sand has a lower heat capacity than the water
the sand has a higher heat capacity than the water
sand is naturally warmer than water
Which of these substances would take the most energy to heat from 30 to 50 degrees Celsius?
water
gold
sand
aluminum
The state of matter with the least thermal energy is...
solid
liquid
gas
plasma
When water reaches its boiling point, the thermal energy will be used to...
raise the temperature of the water above 100o C
change the liquid particles to gas
add more water particles
slow down the water particles
Which of these processes takes more energy?
raising the temperature of water from 0o C to 100o C
changing water at 100o C from a liquid to a gas
When a substance changes from a liquid to a solid (freezes), it must...
gain thermal energy
lose thermal energy
Aerogel is useful because it...
acts as a powerful insulator
is very lightweight
has a very low density
all of these
In order to make aerogel less brittle (fragile), engineers found a way to...
turn it into a liquid
combine it with flexible polymers
make it thicker
use more silica when making it
Which of the following would be a practical way to use aerogel?
using a sheet of pure aerogel as a blanket
using small aerogel particles in a blanket
melting aerogel, then shaping it into a blanket
all of these
