Heat

When things are hot molecules are moving...

• Fast
• Slow
• They are not moving
• They are moving by not fast or slow

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When things are cold molecules are moving...

• Fast
• Slow
• They are not moving
• They are moving by not fast or slow

Tags

NGSS.MS-PS1-4

Everything has heat

• True
• False

Tags

NGSS.HS-PS3-2

Heat and Temperature are the same thing

• True
• False

Heat passes from...

• this realm into another

• Cold to hot

• Hot to cold

• Heat cannot be passed

Why do objects cool down?

• All heat will slowly be destroyed.
• The cold attacks the heat.
• Heat is always transferring so the heat will always move to a cooler place.
• The heat disappears.

What is the formula to calculate heat energy required to raise the temperature of any substance?

• Q = m C ∆T

• Q = m Cp

• Q = ½ m v

• m = Q Cp

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy(heat)?

• Large cup (Trenta)

• Small cup (Tall)

• Venti

• All three are the same temperature so they have same thermal energy

If the specific heat of water is 4,186 J/kg∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C? 

• -80,371.2 J
• 44,938.6 J
• 80,371.2 J
• 112,575.9 K

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down
• They would stop moving
• They would speed up
• There would be no effect

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5