What happened with Benjamin Franklin and his kite?

Sparks jumped from kite string to key.

His kite burnt up from the lightning.

He gave up after it didn't work.

What are the main parts to a battery and how does it work?

Two different metals and electrolyte.

It's a mobile source of direct current.

Two of the same metal and electrolyte.

What are the 2 types of batteries and what are the advantages and disadvantages of each?

Wet cell Advantage: very powerful Disadvantage: heavy, dangerous

Dry cell Advantage: Safer Disadvantage: Weaker

Dry cell Advantage: Very powerful Disadvantage: Heavy, dangerous

Wet cell Advantage: Safer Disadvantage: Weaker

What is current electricity?

Occurs when there is a flow of electrons/the flow of electric charge in a conductor

Occurs when there is a flow of protons/the flow of electric charge in a conductor

Occurs when there is a flow of neutrons/the flow of electric charge in a conductor

What makes a good conductor and a good insulator for electricity?

Conductor : Metals, Water Insulator : Rubber

Insulator : Metals, Water Conductor : Rubber

Conductor : Milk Insulator : Rubber

Conductor : Metals, Water Insulator : Hair

What are the 4 common electrical symbols used with circuitry?

Switch, Battery, Light bulb, and Closed Light Switch-Power on.

Metals, Battery, Light bulb, and Closed Light Switch-Power on.

Parallel, Series, Electrons, Metal.

What are the advantages and disadvantages of series and parallel circuits?

Series circuit Advantage : cheaper Disadvantage : If 1 light goes out all of them do.

Parallel circuit Advantage : Independent of each light. Disadvantage : Expensive

Parallel circuit Advantage : cheaper Disadvantage : If 1 light goes out all of them do.

Series circuit Advantage : Independent of each light. Disadvantage : Expensive

What do series and parallel circuits look like - describe?

Series Circuit : 1 complete loop of wire, everything is connected

Parallel Circuit : 2 or more loops of wire, independent of each other

Parallel Circuit : 1 complete loop of wire, everything is connected

Series Circuit : 2 or more loops of wire, independent of each other

What are the main reasons for having circuit breakers in your house?

Protects home from catching on fire.

It helps subdivide electricity into rooms

To prevent your electricity from working

What is the difference between an electric motor and an electric generator and what do they have in common?

Electric motor Difference : Turns electrical energy into mechanical energy Same : Both use a series of magnets and coiled insulated copper wires.

Electric generator Difference : Turns mechanical energy into electrical energy Same : Both use a series of magnets and coiled insulated copper wires.

Electric motor Difference : Turns mechanical energy into electrical energy Same : Both use a series of magnets and coiled insulated copper wires.

Electric generator Difference : Turns electrical energy into mechanical energy Same : Both use a series of magnets and coiled insulated copper wires.

What are two types of current electricity and how do they work?

Direct Current/DC Electricity that moves in one direction

Alternating Current/AC Electricity that moves in 2 directions

Direct Current/DC Electricity that moves in 2 directions

Alternating Current/AC Electricity that moves in one direction

What device can make AC and usually makes DC?

DC : Generators AC : Electricity

AC : Electricity DC : Batteries

How does a solar cell work? What are the pros and cons of using them?

Harnesses the energy of the sun

Pro's: Simple. Endless Energy. Free. Green. No harmful effects on wildlife. Con's: Cost efficient in sunny areas. Expensive. Cannot be handmade.

Pro's: Cost efficient in sunny areas. Expensive. Cannot be handmade. Con's: Simple. Endless Energy. Free. Green. No harmful effects on wildlife.

How does hydroelectric power work? What are the pros and cons of using them?

Using flowing water to drive turbine/generator

Pro's: Almost Endless. Free. Green. Con's: Disruptive to aquatic wildlife. Dams/reservoirs can break. Sedimentation builds up.

Harnesses the energy of the sun

Pro's: Disruptive to aquatic wildlife. Dams/reservoirs can break. Sedimentation builds up. Con's: Almost Endless. Free. Green.

What 4 things affect how windmills work? What are the pros and cons of using them?

Pro's: Free. Almost Endless. Green. Jobs. Con's: Unsightly. Affects flying animals. Expensive to make.

How tall the tower is (taller better), How long the blades are (longer better), how high in elevation the windmill is(lower better), how strong wind is (more better to about 30 mph)

Pro's: Unsightly. Affects flying animals. Expensive to make. Con's: Free. Almost Endless. Green. Jobs.

What are the 8 steps that electricity takes when coming to your house?

1. Electricity leaves the power plant, 2. It then flows through transmission lines, 3. It then goes to substation, 4. It then flows through distribution lines, 5. It then goes to transformers, 6. It then goes to an electric meter, 7. It then goes into house to the breaker box, 8. It then goes to the light fixtures, appliances and outlets

1. It comes from plant 2.-8. It goes to your house through the things

1. It 2.Goes 3.Very 4.Fast 5.Through 6.Many 7.Different 8.Wires

What are the 3 types of electronic components and what do they do?

Resistor Amplify or switch electronic signals and electrical power

Capacitors Stores electric energy when they are connected to a battery

Transistors Controls flow of current to other components

Watts Measures how much electricity is being used

What are Watts, Volts, and Amps - What do they measure?

Watts Measures how much electricity is being used Volts Measures how much potential electricity is being sent Amps Measures how much electricity is sent

Watts Measures how much electricity is being sent Volts Measures how much potential electricity is being used Amps Measures how much electricity is sent

Watts Measures how much electricity is being sent Volts Measures how much potential electricity is being used Amps Measures how much electricity is used

Science test yayayay

Authored by Lex R

Science

7th Grade

NGSS covered

Used 2+ times

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29 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 3 pts

What is static electricity?

Occurs when there is a flow of electrons.

A force created by an attraction between 2 objects with opposite charges.

Two metals and electrolyte.

Moisture, Heat, and Ice.

MULTIPLE SELECT QUESTION

45 sec • 3 pts

How does something become positively and negatively charged?

Something becomes positively charged when it loses electrons.

Something becomes positively charged when it gains electrons.

Something becomes negatively charged when it loses electrons.

Something becomes negatively charged when it gains electrons.

MULTIPLE CHOICE QUESTION

30 sec • 3 pts

What 3 ingredients make lightning?

100,000 volts of lighting, Metal frame, and Water

Moisture, Heat, and Ice.

Cloud to ground, Cloud to Cloud, and Inner Cloud.

Step leaders, Streamers, and Sparks.

MULTIPLE CHOICE QUESTION

30 sec • 3 pts

How many millions of volts can lightning be?

100,000

1 billion

200,000

10,000

MULTIPLE SELECT QUESTION

45 sec • 3 pts

How hot can lightning be?

100,000°F

Hotter than the suns surface

Insanely crazily blazing

50,000°F

MULTIPLE CHOICE QUESTION

30 sec • 3 pts

How is lightning made? (starting with ice crystals hitting hail stones)

1. Cloud becomes electrified, 2. electrical current rips through, 3. neutralize 2 charges causing lightning.

1. Electrical current rips through, 2. cloud becomes electrified, 3. neutralize 2 charges causing lightning.

1. Neutralize 2 charges causing lightning, 2. cloud becomes electrified, 3. electrical current rips through.

1. Cloud becomes electrified, 2. neutralize 2 charges causing lightning, 3. electrical current rips through.

Normally, what are the charges at the top and bottom of a cloud?

Top : Negative

Bottom : Negative

Top : Negative

Bottom : Positive

Top : Positive

Bottom : Negative

Top : Positive

Bottom : Positive

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Science test yayayay

What is static electricity?

How does something become positively and negatively charged?

What 3 ingredients make lightning?

How many millions of volts can lightning be?

How hot can lightning be?

How is lightning made? (starting with ice crystals hitting hail stones)

Normally, what are the charges at the top and bottom of a cloud?

What are the charged feelers that come from the cloud (-) and the ground (+) called?

What percentage of lightning never touches the ground?

Beside inner cloud lightning (ex: sheet lightning) and cloud-to-cloud lightning (ex: spider lightning), what is the other type?

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