Question

29 in the future, cars may provide energy savings by
a. running on electricity
b. being larger and heavier
c. moving at much faster speeds
d. using only unleaded gasoline

1. the process of burning gasoline in a car engine to release energy is called

a. hydroelectric power
b. combustion
c. nuclear fusion
d. hydrogen power

1. as a consumer what can you do to conserve energy?

a. keep you home cooler in winter and warmer in the summer
b. use natural lights instead of electric lights
c. turn off the television and the lights when you leave a room
d. all of the above

1. a liquid fossil fuel formed from the remains of oceanic animals, algae, and protists is

a. oil
b. natural gas
c. coal
d. biomass

1. many calculators contain that convert solar energy into electricity.

a. solar cells
b. solar windows
c. a passive solar system
d. lights

1. wood, leaves, and manure belong to a group of renewable energy sources called fuels.

a. fossil
b. biomass
c. hydrocarbon
d. gas

1. you can conserve energy by using instead of air conditioners.

a. air conditions during the summer
b. air conditioners during daytime hours
c. electric cooling systems
d. fans or opening windows

1. what is an advantage to wind power?

a. free
b. renewable
c. does not cause pollution
d. all of the above

Explanation:

Question 29

To save energy, cars running on electricity (option a) is correct. Larger/heavier cars (b) use more energy, faster speeds (c) increase energy use, and unleaded gasoline (d) is about emissions, not energy savings.

Burning gasoline to release energy is combustion (option b). Hydroelectric (a) uses water, nuclear fusion (c) is atomic, hydrogen power (d) uses hydrogen, not gasoline burning.

To conserve energy: using natural light (b), turning off TV/lights (c) are good. Keeping home cooler in winter/warmer in summer (a) wastes energy. So "all of the above" (d) is wrong, but actually b and c are correct, but the option d is intended as correct here (maybe a typo in a, but standard answer is d as b and c are energy - saving, and a is not, but likely the question considers d as correct).

Answer:

a. running on electricity

Question 30