Apes

What is a key advantage of nondepletable energy sources over nonrenewable energy sources?

• Nondepletable energy sources will not run out on human time scales.

• Electricity generated by nondepletable energy sources is consistently lower in price.

• Nondepletable energy is easier to use than fossil fuels.

• Use of nondepletable energy sources has no negative environmental effects.

• Nondepletable energy sources do not require complex technology to use.

Use Table 13-1. If both LCD televisions are on for 4 hours per day for one month (30 days) how much less energy does the Energy Star television use during that time?

• 400 kWh

• 100 kWh

• 120 kWh

• 12 kWh

• 1.2 kWh

Use Table 13-1. If the cost of electricity is $0.10 per kWh and both LCD televisions are used for four hours per day for a year (365 days), how much less does the Energy Star model cost in electricity for that year?

• 480

• 146

• 120

• 14.6

• 1.46

Use Table 13-1. If a household watches television 4 hours per day for a year (365 days), how many more kWh will the plasma television use than the Energy Star television?

• 175 kWh

• 262 kWh

• 409 kWh

• 584 kWh

• 2453 kWh

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Use Table 13-1. A community has 200,000 homes and 1 percent of those homes have plasma televisions. How many kWh of excess energy are being consumed in a year (365 days) by the households that use plasma televisions rather than Energy Star LCD televisions?

• 350,000 kWh

• 524,000 kWh

• 818,000 kWh

• 1,168,000 kWh

• 4.906,000 kWh

If a 100 W incandescent light bulb uses 360 kJ of energy per hour, and a compact fluorescent bulb uses as much, how much energy would a compact fluorescent bulb use in 30 minutes?

• 4.5 kJ

• 9 kJ

• 45 kJ

• 90 kJ

• 900 kJ

A coal fired power plant is 33.3 percent efficient in converting the potential energy of coal into electricity. A nearby household receives 100 percent of its electricity from the coal fired power plant. After learning about energy conservation, the household reduces its electricity use by 200 kWh of electricity. How many kWh of the potential energy from coal would be conserved?

• 100 kWh

• 200 kWh

• 300 kWh

• 400 kWh

• 600 kWh

Tags

NGSS.MS-PS3-5

To construct a house using sustainable design, the building materials should

• have a high thermal mass to reduce the need for heating.

• have a low thermal mass to reduce the need for heating.

• have a low thermal mass to retain heat.

• be a light color to increase heat retention.

• be a dark color to increase shade.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Use Figure 13-1. What percent of the U.S. energy is provided by nonrenewable energy sources?

• 7 percent

• 60 percent

• 84 percent

• 93 percent

• 99 percent

Use Figure 13-1. The most utilized renewable resource of the United States is

• biomass

• hydroelectric

• wind

• solar

• geothermal