1. The Sun as an Energy Source

2. Hot Notes
Radiation is the direct transfer of energy by electromagnetic waves
Solar radiation is energy from the Sun
It is a major source of energy on Earth.

3. What is a Radiometer?
An indicator of radiant energy.

4. (Number of Seconds Radiometer Continues to Spin after Lights Out)
Collecting Radiant Energy Data
Distance vs. Time
Distance From the Lightbulb to radiometer
Time
(Number of Seconds Radiometer Continues to Spin after Lights Out)
Trial 1
Trial 2
Trial 3
Average
20 cm
40 cm
60 cm

5. What is a Radiometer? An indicator of radiant energy.
Pay attention to the importance of the black and white vanes when you conduct your experiment. Be able to share out their role.

6. Your Turn Refer to student guide page 90
What is the question that you would like to explore? What variable are you changing?
Make a table to gather your data
Present idea before proceeding.