Unit 2 Quiz Show

After cooking an egg in boiling water, you cool the egg by putting it into a bowl of cold water.  Which of the following explains the egg's cooling process?

• Temperature is transferred from the egg to the water.
• Energy is transferred from the water to the egg.
• Energy is transferred from the egg to the water.
• Cold moves from the water into the egg.

If you put a metal spoon and a wooden spoon into a pot of boiling water, one will become too hot to touch.  Why?

• Metals conduct heat better than wood.
• Wood conducts heat better than metals.
• Metals pull in heat because heat is attracted to metals.
• Wood isn't as strong as metals.

When you hold a metal coat hanger in a camp fire to roast a marshmallow, the coat hanger might get too hot to hold.  Why might the coat hanger get too hot?

• The heat radiates along the coat hanger.
• The heat builds up near the flame until it can't hold it anymore and then moves along the coat hanger.
• Metal atoms vibrate with more energy when they get hot, and they collide with atoms near them, which makes the neighboring atoms vibrate, too.
• Since metals melt in fire, they react very strongly to fire and get hot easily.

As water in a freezer turns into ice,

• the water absorbs energy from the air in the freezer.
• the water absorbs the coldness from the air in the freezer.
• the freezer air absorbs heat from the water.
• the water neither absorbs nor releases energy.

In how many ways does heat move around the universe?

• One
• Three
• Two
• Ten

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Hot air moving up is an example of 

• Radiation
• Conduction
• Magic
• Convection

You pick up a can of soda off of the countertop.  The countertop underneath the can feels colder than the rest of the counter.  Which explanation do you think is the best?

• The cold has been transferred from the soda to the counter.
• There is no heat energy left in the counter beneath the can.
• Some heat has been transferred from the counter to the soda.
• The heat beneath the can moves away into other parts of the countertop.

Which of the following is an example of convection?

• A hair dryer is drying up your hair.
• When the AC or heater changes the temperature.
• When a car engine turns hot after being turned on.
• When you are making soup and the water is rising and lowering.

What heat transfer happens when you burn your hand by touching a fire?

• Radiation
• Conduction
• Convectio
• I don't know!!!!!!!!!!!

When a pot is  touching a stove that is on, what heat transfer is happening?

• I don't know??????
• Radiation
• Conduction
• Convection