Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Rate of Heat Transfe

QuestionAnswer
where is heat energy from an object radiated from? the surface
The bigger the surface area... the more infrared waves that can be emitted or absorbed by the surface
why do car engines have 'fins'? they increase the surface area so heat is radiated away quicker, so the engine cools quicker
what type of materials transfer heat away more quickly? objects made from good conductors
why is a vacuum flask double walled with a vacuum between the 2 walls? to stop all conduction and convection through the sides
why are the walls either side of a vacuum silvered? to keep heat loss by radiation to a minimum
why is the bottle supported using insulating foam? it minimises heat conduction to or from the outer glass bottle
why is the stopper made of plastic and filled with cork or foam? to reduce any heat conduction through it
why do the hairs on your skin 'stand up'? to trap a layer of insulating air, this limits the amount of heat loss by convection
why do some people go pink when they get hot? because your body diverts more blood to flow near the surface of your skin so that more heat can be lost by radiation
Created by: rv1
Popular Physics sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards