Question:

Quick physical science help?!!?

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1: How many electrons must be added to Carbon to fill the outer shell?

Eight electrons

Carbon does not have an outer shell

Four electrons

2: If you added Oxygen and set hydrocarbon molecules on fire, what would you get?

Hydrocarbons don't burn

C3H8O2

H2O and CO2

3: Where did the "Buckyball" get its name?

American engineer, Buckmkinster Fuller.

3rd allotrope of Carbon.

It looks like a domed roof.

4: A little Carbon dioxide puts the fizz in soda, but too much of it in the air can do what?

Traps heat in atmosphere and might raise Earth’s temperature.

Could cause climate changes.

A and B

5: Diamonds and graphite are both pure allotropes of Carbon. How are they different?

Diamonds are clear, graphite is grey.

Diamonds are hardest mineral known, graphite’s soft enough to leave a line on paper.

A and B

6: A girl is standing on a washing up bowl and touching a Van der Graaf machine. What do you think is the purpose of the washing up bowl?

Higher altitudes conduct electricity better

So the girl can reach the Van der Graff

To insulate the girl from the ground

7: Explain why the girl's hair is standing on end (no it's not her style, it's to do with the charge)

The static collected from the Van der Graff generator creates a field on the girls head that pulls her hair away from the machine.

The girl's hairs all pick up static electricity from the Van de Graaf machine and like charges repel, so each hair tries to get as far away from the other hairs as possible.

The girl has metal braids in her hair that are repelled by the Van der Graff generator

8: Which sub-atomic particle has no electrical charge?

They all have electrical charges

Anti-matter

The neutron

9: Which of the following will usually create static electricity?

Rub a wet rag on a plastic comb

Rub a coin with a plastic comb

Rub a plastic comb with some wool

10: How does friction cause electrons to go from one material to another?

It scrapes them off and deposits them on the other material

It doesn't move the electrons; adhesive forces pull off the electrons

Electrons are attracted to another material because of the Periodic Table

11: What happens to a material that collects electrons on its surface?

It has a negative charge

It has a positive charge

It shoots off sparks

12: What causes the noise of thunder?

Air clapping together after it suddenly cools

Friction on the rain drops

The noise caused by the bright flash

13: If you were spray painting a car and the paint droplets are given a positive charge, what charge should the car be given?

negative

positive

same charge

14: Why would less paint fall on the floor?

less paint falls on the floor because the paint being of the same charge attracts itself

less paint falls on the floor because its coming out with a smoother coating

less paint falls on the floor because more is being attracted to the car

15: How does the special spray prevent static cling?

It creates an opposite charge

It makes the clothes stiff so they don't cling

It discourages the collection of charges

16: When can high voltages be relatively safe?

If you wear rubber soled shoes

If the amount of current (amperes) is very small

If you stay more than 15 inches away

17: How can static electricity help control pollution?

By preventing lightning from starting fires

By cleaning particles from smoke stacks

By cleaning electrons from the air

18: What is a common way to create direct current electricity?

Lightning

Atomic energy

None of the above

19: What happens when a light burns out in a series circuit?

The other lights remain lit

The voltage increases dramatically

The circuit is broken

20: What is the frequency of AC in the United States?

60 Hertz

50 Hertz

60 cycles per minute

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1 ANSWERS


  1. 1.Carbon does not have an outer shell

    2. C3H8O2

    3. It looks like a domed roof.

    4. Traps heat in atmosphere and might raise Earth’s temperature.

    5. Diamonds are clear, graphite is grey.

    6. To insulate the girl from the ground

    7. The girl has metal braids in her hair that are repelled by the Van der Graff generator

    8. The neutron

    9. Rub a coin with a plastic comb

    10. It doesn't move the electrons; adhesive forces pull off the electrons

    11.  It has a positive charge

    12.  Air clapping together after it suddenly cools

    13. negative

    14. less paint falls on the floor because its coming out with a smoother coating

    15. It discourages the collection of charges

    16. If the amount of current (amperes) is very small

    17. By cleaning particles from smoke stacks

    18. None of the above

    19. The voltage increases dramatically

    20. 50 Hertz  

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