1D Light Mastery Quiz Review

A CFL uses about __________ of the energy used by an incandescent light bulb.

• three fourths
• one tenth
• one half
• the same amount

An incandescent light bulb converts most of its energy into "heat" or wasted __________.

• light energy
• nuclear energy
• thermal energy
• mechanical energy

The average cost of one kilowatt-hour of electricity for homes in Ohio is _________.

• .25
• $1.00
• .13
• .02

One of the easiest and cheapest ways to reduce electricity use at home is to __________.

• replace windows
• add insulation to the attic
• replace an old refrigerator
• change an IL to a LED

What do the letters CFL stand for?

• compact fluorescent light
• canadian football league
• center for literacy
• champions for life

Why are CFLs and LEDs more efficient?

• produce more light than heat
• produce more heat than light
• give off more thermal energy
• cost more per kwh

Why should you replace incandescent light bulbs with CFLs or LEDs and not wait until they burn out?

• ILs wasting money
• ILs waste energy
• CFLs and LEDs save energy
• LED's save money
• all of the choices are correct

How do you calculate the life cycle cost of a light bulb?

• cost of bulb + cost of electricity
• cost of bulb
• cost of electricity
• cost of bulb x cost of electricty

Which light bulb was the coolest and saves the most money for bulb and electricity?

• LED
• CFL
• IL

Which light bulb was truly a "heat" bulb?

• LED
• CFL
• IL