Question

1. select all that apply.

which three ways decrease energy use at home?
planting more trees in the garden
installing a smart thermostat
sealing air leaks around windows and doors
using energy - efficient appliances

1. choose the correct answer.

what is a benefit of using energy - efficient appliances and lighting in homes?
they use more electricity.
they increase air pollution.
they are more expensive to operate.
they reduce the amount of energy needed from power plants.

Explanation:

Question 3:

To determine ways to decrease home energy use:

• Planting trees: Shades home, reduces cooling energy (valid).
• Smart thermostat: Optimizes heating/cooling (valid).
• Sealing air leaks: Prevents energy loss (valid).
• Energy - efficient appliances: Use less energy (valid). But the question asks for THREE. Wait, actually, all except maybe? Wait, no—planting trees (shade, lowers AC use), smart thermostat (controls temp efficiently), sealing leaks (stops draft, less heating/cooling), energy - efficient appliances (use less energy). Wait, the question says “THREE” but actually these four? Wait, no, maybe the intended three are smart thermostat, sealing air leaks, energy - efficient appliances? Wait, no—planting trees does help (shade reduces cooling load). Wait, maybe the question’s intended three are: installing a smart thermostat, sealing air leaks, using energy - efficient appliances. Wait, no, let's re - check:

• Planting more trees in the garden: Provides shade, reducing the need for air conditioning (decreases energy use) – valid.
• Installing a smart thermostat: Adjusts temperature efficiently, reducing heating/cooling energy – valid.
• Sealing air leaks around windows and doors: Prevents conditioned air from escaping, reducing energy for heating/cooling – valid.
• Using energy - efficient appliances: Consume less energy than standard ones – valid.

But the question says “THREE” – maybe a typo, but likely the three are: installing a smart thermostat, sealing air leaks, using energy - efficient appliances (or including planting trees). Assuming the correct three (as per energy - saving knowledge) are:

• Installing a smart thermostat
• Sealing air leaks around windows and doors
• Using energy - efficient appliances

(Note: Planting trees also works, but maybe the question considers the other three as more direct home - based energy - saving actions.)

Analyze each option:

• “They use more electricity”: False – energy - efficient appliances use less electricity.
• “They increase air pollution”: False – less energy use means less pollution from power plants (which produce pollution).
• “They are more expensive to operate”: False – they use less energy, so operating costs (e.g., electricity bills) are lower.
• “They reduce the amount of energy needed from power plants”: True – since they use less energy, the total energy drawn from power plants decreases.

Answer:

• Installing a smart thermostat
• Sealing air leaks around windows and doors
• Using energy - efficient appliances

Question 4: