1. Day 2 Engineering for a better world…

2. What did we do yesterday? You drew an engineer… – What was your engineer doing?  We talked about the Gulf oil spill…  Why do we use oil?  What could we use instead of oil?  What solution did we determine would Save the Pelicans forever?  What was the Muddiest point?  What was the Clearest point?

3. What did we do yesterday? We measured the ________ from solar cells. We connected the solar cells in ______ and in ________. 1.5 V3.0 V6.0 V Total voltage = __________

4. What did we do yesterday? We measured the ________ from solar cells. We connected the solar cells in ______ and in ________. 1.5 V3.0 V6.0 V Total voltage = __________

5. Electricity is not measured by Voltage alone! The energy produced by a solar cell or battery is the product of Voltage AND Current. A lot of Voltage and a tiny bit of current is not much energy. Voltage = _____________________ Current = _____________________ Energy per second = Voltage x Current

6. How much energy? Voltage = _____________ Volts Current = _____________ Amps 1.5 V3.0 V6.0 V Total energy per second = __________ Joules

7. How much energy? 1.5 V3.0 V6.0 V Total energy per second = __________ Joules Voltage = _____________ Volts Current = _____________ Amps

8. What IS energy??? Energy is….