22
By Katerina, Avery, Curt, and Shah Potato Clocks and Juice Clocks

Potato Clocks and Juice Clocks

  • Upload
    sabine

  • View
    82

  • Download
    1

Embed Size (px)

DESCRIPTION

Potato Clocks and Juice Clocks. By Katerina , Avery, Curt, and Shah. Potato Clock Theory. A potato is an electrochemical battery in which a chemical reaction occurs in a liquid between two different metals. . - PowerPoint PPT Presentation

Citation preview

Page 1: Potato Clocks  and Juice  Clocks

By Katerina, Avery, Curt, and Shah

Potato Clocks and

Juice Clocks

Page 2: Potato Clocks  and Juice  Clocks

Potato Clock Theory

Page 3: Potato Clocks  and Juice  Clocks

A potato is an electrochemical battery in which a chemical reaction occurs in a liquid between two different metals.

Page 4: Potato Clocks  and Juice  Clocks

The potato battery uses strips of zinc and copper in the acidic juice to run a digital clock.

Page 5: Potato Clocks  and Juice  Clocks

At the zinc strip, the acid in the vegetable dissolves the zinc freeing electrons. The copper wire uses the electrons that the zinc wire frees.

Page 6: Potato Clocks  and Juice  Clocks

In order to obtain enough current to power the clock, two potato cells are required and connected in series (head to tail).

Page 7: Potato Clocks  and Juice  Clocks

Potato Clock Directions

Page 8: Potato Clocks  and Juice  Clocks

1. Put potatoes in holder. 2. Insert Zinc strip from the

clock into the left potato.3. Insert Copper end of the

loose strip into the same potato, 2 cm apart and parallel to the Zinc strip.

Page 9: Potato Clocks  and Juice  Clocks

4. Insert Zinc end of the loose strip into the right potato.

5. Insert Copper strip from the clock into the same potato, 2 cm apart and parallel to the Zinc strip.

6. The clock should be on!

Page 10: Potato Clocks  and Juice  Clocks

Potato Clock Fun Facts

Page 11: Potato Clocks  and Juice  Clocks

When the strips are inserted into the potato, the surrounding area of the strips turns black.

Page 12: Potato Clocks  and Juice  Clocks

•An average potato clock lasts about 24 hours, depending on the size of the potato.

Page 13: Potato Clocks  and Juice  Clocks

A potato battery has a type of electrochemical cell.

Page 14: Potato Clocks  and Juice  Clocks

Juice Clock Theory

Page 15: Potato Clocks  and Juice  Clocks

Some fruits and vegetables are lightly acidic. This acid can be used to produce electricity.

Page 16: Potato Clocks  and Juice  Clocks

The acid in the juice reacts with the copper and zinc electrodes to make electricity.

Page 17: Potato Clocks  and Juice  Clocks

Each of the compartments in the liquid energy source produces about 0.7 volts. When connected together, it makes about 3.8 volts total. Each compartment is like a cell in a battery.

Page 18: Potato Clocks  and Juice  Clocks

The red and black wires are used to connect components. They are used to transport electricity. The clock contains a small crystal.

Page 19: Potato Clocks  and Juice  Clocks

When a crystal is struck by an electronic pulse, it vibrates. A microelectronic circuit makes the pulse and measures the vibration rate. The vibration rate is used as a time standard.

Page 20: Potato Clocks  and Juice  Clocks

Juice Clock Fun Facts

Page 21: Potato Clocks  and Juice  Clocks

The Juice works better than the water

Salt provides electrolites which gives us energy.

Page 22: Potato Clocks  and Juice  Clocks

?????????

Any Questions?