Geography, asked by tarunmittal3361, 1 year ago

How to make model of geothermal energy

Answers

Answered by chandanasundar
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Answered by hema96
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Explanation:

MODEL OF GEOTHERMAL ENERGY

INTRODUCTION

Water can be heated through various means by heat contained in the Earth. That hot water can be used to generate electricity, or used directly for heat. This activity models one way the energy contained in the hot water can be used to generate electricity.

OBJECTIVES

Students will turn the energy contained in vaporized dry ice into mechanical energy by spinning a pinwheel.

MATERIALS

Making an origami pinwheel

Approximately 5” squares of lightweight, but stiff pieces of paper

Skewers or other pointed stick or wire, at least 6 inches long

Generating model of geothermal heat used in electricity generation

Clear plastic cups with covers into which a straw can be inserted, about 12 oz

Straw, flexible type if possible

Tape or clay to cover or fill the holes around the straw

Dry ice, several pieces per cup

Hot water

Hot pot to heat the water, if necessary

Gloves, towels, or wooden tongs for handling ice (or have instructor handle dry ice)

Small hammer to break up dry ice

SAFETY

Dry ice must be handled with gloves. This activity may be presented as a demonstration to avoid the possibility of students handling dry ice incorrectly.

PROCEDURE

Make the origami pinwheel as follows:

Start with the water bomb base as follows:

Fold the square of paper in half to make rectangles, unfold the paper, and fold the paper in half to make rectangles in the other direction.

Turn the paper over, fold the paper in half to make triangles, unfold and fold in half to make triangles in the other direction.

Place a ¾“ piece of tape at the intersection of the folds in such a way that the tape is on the inside of the folds that make the X (not the + sign). In the model shown, the tape will be placed on the white side of the paper.

Hold two opposite corners of the square with the square folded in half to make triangles. Gently push the corners toward the center so the other two corners poke out to make a “evergreen tree.”

Fold these other “wings” to each side to make an isosceles right triangle with two flaps at each of the 45 degree corners.

Make the pinwheel

Fold each of the 4 corners in the same direction by folding the top 45 degree angle to the top 90 degree corner, lining up the cut edge with the fold bisecting the base of the isosceles triangle going up to the 90 degree corner.

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