3.3 Mastery Check

Thermal energy moves from ​ (a)   temperature objects to ​ (b)   temperature objects.

• higher
• lower
• Celsius
• Kelvin

Identify the phrases and examples as conductors or insulators:

Groups:

(a) Conductors

,

(b) Insulators

• wood

• 
• 
• 
• skin

• lets heat flow

• 
• does not let heat flow

• air

• stainless steel

Tags

NGSS.MS-PS3-3

Match the thermal energy transfer with its example.

• radiation

• 
• convection

• 
• conduction

• 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Identify the flow of thermal energy when a person sits in a cold chair:

Thermal energy moves from ​ (a)   to ​ (b)   .

• the person
• the chair
• air
• sun

Tags

NGSS.MS-PS3-4

What happens to molecules in an object as the temperature is increased?

• Molecules become static and stop moving as temperature increases.
• Molecules move faster and vibrate more as temperature increases.
• Molecules shrink and become denser as temperature increases.
• Molecules lose energy and cool down as temperature increases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Why is there no such thing as "cold"?

• Cold is a state of matter.
• Cold can be measured in degrees.
• It is simply the absence of heat.

• Cold is a type of energy.

Tags

NGSS.MS-PS3-4

How much heat is needed to warm 0.072 kg of gold from 20^oC to 90^oC if it's specific heat is 136 J/kg^oC.

• 26.98 J

• 132 J

• 0.037 J

• 685 J

Tags

NGSS.MS-PS3-5

If it takes 820 J of heat to warm a sample of zinc from 0^oC to 50^oC, what would be the mass of the zinc? Zinc has a specific heat of 380J/kg^oC.

• 0.0432 kg
• 0.060 kg
• 0.100 kg
• 0.025 kg

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How would you set up this problem:

If it takes 820 J of heat to warm a sample of zinc from 0^oC to 50^oC, what would be the mass of the zinc? Zinc has a specific heat of 380J/kg^oC.

Tags

NGSS.MS-PS3-4

How do you set up this problem:

How much heat is needed to warm 0.072 kg of gold from 20^oC to 90^oC if it's specific heat is 136 J/kg^oC?

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4