3.01 Power and Energy

3.01 Power and Energy

Multiple Choice

Which of the following is an advantage of generating power from wind?

• Inconsistent output

• Renewable & Clean energy

• Loud noise level

• Geographic location selection

Multiple Choice

As a candle burns, the chemical energy stored in the wax is transferred into

• Heat and Light

• Heat and Magnetism

• Electricity and Light

• Electricity and Magnetism

Multiple Choice

The unit for power is

• Calorie

• Work

• Watt

• Power

Multiple Choice

Which form of energy is produced when a rubber band vibrates?

• chemical

• light

• electrical

• sound

Multiple Choice

Which form of energy is being converted to electrical energy by the batteries in a flashlight?

• Chemical

• Nuclear

• Solar

• Sound

Multiple Choice

The Law of Conservation of Energy states that energy cannot be created or destroyed, but energy can change

• its total mass

• its total volume

• from one form to another

• from one state of matter to another

Multiple Choice

Which factor contributes to global warming?

• increased use of solar-powered cars

• increased burning of fossil fuels

• better long-term weather forecasts

• changing distance between Earth and Sun

Multiple Choice

Energy of motion is called

• elastic potential energy

• kinetic energy

• gravitational potential energy

• chemical energy

Multiple Choice

Which energy source is renewable?

• Fuel oil

• Natural Gas

• WInd

• Coal

Multiple Choice

Which two energy sources together provide more than 50% of the energy needs in the US?

• nuclear and natural gas

• oil and coal

• hydro power and oil

• natural gas and oil

Multiple Choice

Which of the following components of the systems model includes resources such as energy, capital, people, materials, tools and machines, time, and information?

• Input

• Feedback

• Output

• Process

Multiple Choice

Which of the following is a feedback mechanism for a system?

• The power LED light on a computer monitor

• The temperature setting knob on a refrigerator

• The progress bar when downloading a file on iTunes

• a. The alarm on an alarm clock

Multiple Choice

Which of the following is an output of an email communication system?

• The computer used by the person sending the email

• The modem used for an Internet connection

• The person sending the email

• The sent email

Multiple Choice

Which of the following is an example of a closed system?

• A clothes dryer

• A microwave

• A coffee pot

• A motion-detecting exterior light