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From Karnataka Open Educational Resources
Alternative energy resources (view source)
Revision as of 05:40, 26 August 2014
, 05:40, 26 August 2014→Process (How to do the activity)
can with black paper. Secure the paper with tape or rubber bands. This helps the can absorb
can with black paper. Secure the paper with tape or rubber bands. This helps the can absorb
heat.
heat.
2. Use kabob stick to punch a hole through
<br>2. Use kabob stick to punch a hole through
one of the long sides of the shoebox. The
one of the long sides of the shoebox. The
hole should be about 2” from the back of the
hole should be about 2” from the back of the
box. This is for the thermometer.
box. This is for the thermometer.
3. You may have to add several layers of
<br>3. You may have to add several layers of
cardboard inside. This lets the thermometer reach the inside of the can. It also adds
cardboard inside. This lets the thermometer reach the inside of the can. It also adds
insulation. Try wrapping the cardboard with aluminum foil to reflect heat onto the can.
insulation. Try wrapping the cardboard with aluminum foil to reflect heat onto the can.
4. Attach another reflector with tape. Puncture the reflectors with kabob sticks, and
<br>4. Attach another reflector with tape. Puncture the reflectors with kabob sticks, and
and slide them through the reflectors. use the sticks
and slide them through the reflectors. use the sticks
to hold the reflectors open.
to hold the reflectors open.
<br>5. Try using a black-painted can and a plain can to see how
fast each heats up. Make a chart to record your results.
fast each heats up. Make a chart to record your results.
<br>6. Lay the shoebox on its side in the sun. You can lean it against a wall to face the
sun. Fill the soda can about 3/4 full with water, and place it in the box. Insert the
sun. Fill the soda can about 3/4 full with water, and place it in the box. Insert the
thermometer, and record the temperature. record the temperature
thermometer, and record the temperature. record the temperature
