Презентация, доклад по английскому языку. Electricity (parts 1-3)

the circuit

and Solar Energy Fun
electricity kit for playing with circuits (inquiry)
solar power kits and car (how it works)

atomic particles called electrons and protons!
Protons = +
Electrons = -

converted by machines at the power plant to Electricity and then put onto the Electric Power Grid

Electric Power Grid
Power Plants
Transmission Lines
Substations
Power Lines
Transformers
Electrical Wiring and Circuit Box

clothes?
When would you go to bed?

Think about all the luxuries the discovery of Electricity has brought us!
No Television
No Radio
No Lights

– Electric Battery 1888 – AC Power
Count Alessandro Volta Nikola Tesla
1805 – Refrigerator 1910 – Flashlight
Oliver Evans Conrad Hubert
1876 – Telephone 1920 – Traffic Light
Alexander Graham Bell Garrett Morgan

– Computer 1991 - WWW
Mauchley and Presper Tim Berners-Lee
1954 – Microwave 1955 – TV Remote
Percy Spencer Eugene Polley

of bar magnets (if possible)
small cup of metal shavings (if possible)

head and describe what it does when you bring it near your hair (It is best to let the group member with the longest hair do this). Answer: It makes the hair stand on end.
If the balloon is positively charged (+), then which charge is in your hair? Answer: negatively charged because they attract.
If you rub the balloon on your head for 5 seconds (have a group member time you), how many pieces of paper can you pick up? If you rub the balloon on your head for 10 seconds, can more pieces of paper be picked up? Answer: More pieces get picked up because there is more charge.
What do you think…? Can this balloon be used to make a light bulb light up? Answer: Yes, but it will only light up for a split second.

paper
1 light bulb

one of them over on its other side and see what happens when you bring the magnets close together.
Describe what you see and why what you see happens? Answer: The magnets will stick to each other when you have their opposite charged sides facing each other, and they will repel each other when the sides with like charges are facing each other.

now have
a CHARGE!

Like charges
attract

battery
1 pencil and piece of paper
1 nail
1 match stick
1 paper clip
1 penny
1 eraser

circuit, list which ones you think will be conductors and which will be insulators? Answer: the nail, the paper clip, and the penny are all conductors.

Place each item into the circuit and see what happens (Conductors will keep the light working while insulators will not allow electricity to pass and light up the light bulb).

battery)
two styrophone cups
4 paper clips
one cup of salt water
one cup of regular tap water

one at Station #3. Instead of using one of the items like a paper clip or an eraser, a cup of both fresh water and salt water is used. Do you think both of them will allow the light to keep working or just one? Answer: Both cups of water conduct electricity, but salt water has more floating charges called “ions.” The light will be brighter when hooked up to this cup.
Explain what you think? Answer: ???????

0.5 cents per hour
Color TV – 0.8 cents per hour
Computer – 1.5 cents per hour
Average Shower – 15 cents per shower
Freezer – 3.7 cents per hour
Stereo – 2.5 cents per hour
Water Heater – 22.5 cents per hour

lines
2 – Never go around downed power lines or substations
3 – Never use electrical appliances near the bathtub
4 – Stay away from all electrical equipment (meters, transformers, etc.)
5 – Do not swim or play outside on a stormy day
6 – Never put fingers or other objects near electrical outlets
7 – Obey all safety signs
8 – Never use appliances with cords showing bare wire

out of open fields or areas where YOU are the tallest thing
If your hair stands on end, crouch low to the ground with as little of your body in contact with the ground as possible

not get shocked?

How does lightning work?

and
heats up!

Lightning travels
At 186,000 miles per second

Thunder travels 1 mile
In 4.5 seconds