Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
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

Physics P1-P3

Physics Revision

QuestionAnswer
Explain the difference between heat and temperature. What units are they measured in? Temperature is a measure of how hot something is and heat is a measure of energy (on an absolute scale)
Describe how a heat from an imersion heater is transferred throughout the water in a tank. What is this process called? Convection - Water is heated and becomes less dense (it exands) and rises the warm water displaces the cool water and the cool water sinks the cool water then is heated and it continues (circulation of fluid)
Explain what refraction is and how it can disrupt radio signals. refraction is when the ray changes direction, it can disrupt radio signals because refraction can disrupt a signal by bending it AWAY from the reciever dish.
Decribe how mircowave ovens cook food. The mrcowaves penetrate a dew centimetres into the food before being absorbed by water moleules and increasing their kinetic energy. The energy is then conducted or convected to other parts.
How might a volcanic eruption change the climate of the Earth? when a volcano erupts alot of dust can shot up high into the atmosphere. the dust reflects radiation from the sun. less radiation gets trhough to earth, which cools down as a result
Explain why sending data by optical fibres might be better than broadcasting it as a radio signal? It can travel very fast and optical fibres are inside a cable so are very secure whereas radio waves can be intercepted very easily and can carry lots of infromation.
Created by: princessfunky