Grade 2 Science Unit: 3 Lesson: 3

Investigating the Effects of Energy

TEKS 2.6AINVESTIGATE THE EFFECTS on an object by increasing or decreasing amounts of light, heat, and sound energy such as how the color of an object appears differently in dimmer light or how heat melts butter.

Here is what you need to be sure to teach!!

(found on page 1 of this unit)

Give the students a list of 5 things to touch.file cabinetdesk top

metal leg of a chairplastic chair

carpet

List the items from coolest to warmest:1. file cabinet2. metal leg of chair3. desk top4. plastic chair5. carpet

Consider letting the students draw 2 or 3 pictures of items that produce heat.

This is a teacher demo.

*be sure to ask how the lamp is similar to or different from the sun*don’t forget to have the students predict (using pictures and words) what will happen when the tray is placed under the lamp

This is a teacher demo.

*be sure to ask how the lamp is similar to or different from the sun*don’t forget to have the students predict (using pictures and words) what will happen when the tray is placed under the lamp

MinutesUnder the

Lamp

ICE BUTTER Chocolate Chips

Suggestion:If you use a lamp in your room, it takes TIME for the butter and chips to melt. So, start the lab, go on with your day and record results periodically during the day on the board. Have students record the chart at the end of the day during science.

Time @ room temp

ICE BUTTER ChocolateChip

Time in frig ICE BUTTER Chocolate Chip

Time in freezer

ICE BUTTER Chocolate Chip

This is the lab sheet for this activity. You can certainly use the sheet as is…or…….

Model on the board and have students copy!!!

So, we suggest you find pictures of different “sources of light energy”.

How can increasing and decreasing light energy affect objects?

How about this as an idea for a center???

The same items can be used for both styles of sound cups.