Energy Challenges

What is the primary cause of global warming?

• Plant life
• Animals, especially cats
• Radiation
• Carbon Dioxide

Where does most CO2 come from?

• Factories and automobiles
• Retail operations
• Colleges and universities
• Farming

Which of these energy sources is NOT renewable?

• Tidal
• Wind
• Solar
• Oil

The highly developed nations of Earth consume _____ percent of the world's energy.

• 30%
• 45%
• 60%
• 70%

One of the biggest improvements in CO2 emissions has been the introduction of _____ .

• leaded gas
• larger cars
• whitewall tires
• electric cars

In the long run, _____ may help save the environment.

• technology
• big business
• governments
• drones

Solar power is a technology that relies on a renewable energy source. Solar power changes energy from the Sun into a form of energy that can be used to heat our homes and run household appliances. What form of energy must solar energy be changed into in order to run household appliances?

• chemical

• electrical

• light

• thermal

In many electrical factories, fossil fuels are burned to boil water and generate steam. This steam is then used to help generate electricity. What type of energy is given off by the fossil fuels and used to boil the water?

• chemical energy

• heat energy

• light energy

• sound energy

Heat from the Earth is used as affordable energy source to reduce the dependence on fossil fuels. Which energy source is most likely being described?

• hydroelectric

• geothermal

• wind

• solar

Tags

NGSS.MS-PS3-4

Which of the energy transformations best explains the conversions of solar panels?

• electrical to heat

• light to electrical

• wind to electrical

• electrical to hydroelectric