Internet Search - Energy
20 Points
Name:_______________________________
Date:____________ Period:_________
Visit each site and follow instructions on this sheet.
The numbers on the sheet
correspond to the numbers of the web sites on the search page.
1. Find a current event on an alternative energy source for your current event report.
2. Write why the following words are often misunderstood.
Energy:______________________________________________________________________________________________
____________________________________________________________________________________________________
Work: ______________________________________________________________________________________________
____________________________________________________________________________________________________
3. Define these terms.
Heat:________________________________________________________________________________________________
____________________________________________________________________________________________________
Conduction:__________________________________________________________________________________________
____________________________________________________________________________________________________
Convection:__________________________________________________________________________________________
____________________________________________________________________________________________________
Radiation:____________________________________________________________________________________________
____________________________________________________________________________________________________
Specific heat:_________________________________________________________________________________________
____________________________________________________________________________________________________
4. Do the Work, Power, Energy applet.
Take notes on "WORK",
"ENERGY" and "POWER" on separate paper
in your notebook.
5. Watch the mechanical energy in a falling ball. You can change the height of the ball by moving the upper red arrow up and down.
How does the potential energy change when you change the height of the ball?___________________________________
What is the relationship between potential energy (PE) and kinetic energy (KE) in this closed system?________________
____________________________________________________________________________________________________
What happens to total energy (Etot) as the ball falls?________________________________________________________
____________________________________________________________________________________________________
6.
Run the
roller coaster. What is the source of all energy for the coaster run?
____________________________________________________________________________________________________
7. Watch the bungee jumper. Complete the table below.
| Energy Chart Bar | What is the position of the jumper when the energy bar chart shows the smallest value? | What is the position of the jumper when the energy bar chart shows the highest value? |
| Gravitational Potential Energy | Top or middle or bottom? | Top or middle or bottom? |
| Elastic Potential Energy | Top or middle or bottom? | Top or middle or bottom? |
| Kinetic Energy | Top or middle or bottom? | Top or middle or bottom? |
Does Total Energy of the system ever change? _______________
8. Get the definition of calorie. _______________________________________________________________________
_____________________________________________________________________________________________________
_____________________________________________________________________________________________________
Write the definition of calorie when used to describe the energy in food. __________________________________
_____________________________________________________________________________________________________
9. Read about conduction, convection and radiation. Do the applet to see how an atom absorbs and emits radiation.