Friction & Heat Production
When you rub two objects together, what type of energy is created?
In addition to light, what else do campfires provide for campers?
heat
What happens to electrical energy when Mrs. Trageser turns on her television?
It changes into light, sound, and heat energy
True or False: Things that give off light often also give off heat.
True
What is the cause when objects rub together?
Friction
What would you need to do with two blocks of wood to make them produce heat?
Rub the 2 blocks together
What will Mrs. Flynn observe coming from a light bulb besides light?
Heat Energy
What types of energy do a refrigerator, computer monitor, and desk lamp have in common?
Heat and light
Name three household objects that transform electricity into heat and light.
EX. Refrigerator, computer monitor, desk lamp
What is the effect when objects rub together?
Heat is produced
Why does a nail feel hot right after being pulled from wood?
The wood rubs against the nail
Why does paper start to burn when placed over a light bulb?
he bulb gives off light as well as heat
How can Mrs. Gerdes recognize which burner her mom used on the stove?
It glows and produces light
What two forms of energy does a campfire produce?
Light and heat
If a light bulb gives off light, what else will it likely produce?
Heat
Which action would create the most heat: dragging a heavy box across the floor or pouring water?
Dragging a heavy box across the floor
What makes a sunny day warm?
The sun gives off light and heat energy
What devices should Mrs. Baggett turn off if her house is too hot? (what objects in the house may also produce heat?)
The ones that give off light
Why do electrical devices in your house create heat?
They transform electrical energy into light, which often produces heat
Why do Mrs. Taggart's rubber rain boots help prevent slipping?
The rubber soles grip the ground and increase friction
Why would Mrs. Bennett's mom suggest she rub her hands together on a cold morning?
Rubbing two objects together can produce heat.
Why does a candle melt when it's lit?
The candle gives off light and heat
Complete this sentence: "A sunny day is warm because the sun gives off light and ____."
Heat Energy
Explain why a stove burner glows when it gets hot.
Hot objects often give off both light and heat energy
Explain the relationship between light-producing objects and heat production.
Things that give off light often also give off heat