Science 14 Chapter 6

A high specific heat capacity means...

• It heats up quickly with energy added

• It requires more energy to change temperature

Why do mice generally stay warm under the snow in the winter?

• the ground does not freeze under the snow

• snow is a poor insulator

• snow is a good insulator

• the ground has a high specific heat capacity

Which of the following is NOT true about heat? 

• Heat moves from hot to cold
• Heat is a form of energy
• Heat cannot be transferred
• Heat makes molecules speed up 

Gloves help keep your hands warm in winter because:

• They are conductors of heat.
• They are fuzzy.
• They are conductors of electrical energy.
• They are insulators.

An object that doesn't conduct heat well is known as:

• a conductor
• an insulator

What is Specific Heat Capacity?

• 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.

Which insulation would best keep a house warm in winter?

• 25 mm of wood shavings with an R-value of 2.42

• 25 mm of fibreglass with an R-value of 4.25

• 25 mm of rigid urethane foam with an R-value of 7.50

• 25 mm of air space with reflective surface with an R-value of 5.54

True or False: An insulator is a type of material that allows heat to escape from an object quickly.

• True
• False

Two identical jars are kept in a refrigerator. Jar A contains 250 mL of milk. Jar B contains 500 mL of milk. The jars are taken out of the refrigerator at the same time. Which jar will reach room temperature first?

• Jar A

• Jar B

• Both jars will warm to room temperature at the same time

• Neither jars will ever warm to room temperature

Which reason BEST explains why sand is very hot on a hot day and water is cool?

• There is less sand than water, so it heats up quicker

• Sand has a higher specific heat capacity than water

• Water takes more energy to heat up than sand

• The sand is initially warmer