Question 1 What percent of the energy generated in the United States is for tran

Question

Question 1

What percent of the energy generated in the United States is for transportation?

Question 1 options:

10 %.

20 %.

33 %.

66%.

75 %.

Question 2

From a physicist's point of view, in which of the following cases has significant work been done?

Question 2 options:

You try to pull your car out of a ditch, but it doesn't budge.

Your mother holds a sleeping baby.

Your brother throws his dirty clothes on the floor.

You review for a test by imagining the questions.

Your father tries unsuccessfully to open a jar.

Question 3

Energy can be stored in a flashlight battery as:

Question 3 options:

electrical energy.

chemical potential energy.

heat energy.

gravitational potential energy.

electromagnetic energy.

Question 4

The burning of fossil fuels adds:

Question 4 options:

renewable energy to the U.S. supply.

carbon dioxide to the atmosphere.

to global cooling and glacial development.

none of the above.

all of the above.

Question 5

The two most important alternative energy sources being developed today that are renewable are:

Question 5 options:

hydro and wind.

nuclear and wind.

tidal and solar.

solar and wind.

nuclear and solar.

Question 6

In an isolated system, the total amount of what is conserved?

Question 6 options:

energy

work

sunlight

time

force

Question 7

The energy in crude oil derives from what original source?

Question 7 options:

sunlight

soil

fossils

rocks

gravity

Question 8

A space capsule falling to earth would have:

Question 8 options:

only kinetic energy

only potential energy

only chemical energy

only heat energy

both kinetic and potential energies

Question 9

What percentage of energy in the United States is generated by fossil fuels?

Question 9 options:

less than 20 %.

20 % to 40 %.

40 % to 60 %.

60 % to 80 %.

more than 80 %.

Question 10

Kinetic energy is thought of as energy of:

Question 10 options:

position.

motion.

magnetism.

time.

distance.

10 %.

20 %.

33 %.

66%.

75 %.

Explanation / Answer

1.Q....What percent of the energy generated in the United States is for transportation.

Ans....66%

2.Q....From a physicist's point of view, in which of the following cases has significant work been done.

Ans...Your brother throws his dirty clothes on the floor.

3.Q...Energy can be stored in a flashlight battery as

Ans...chemical potential energy

4.Q...The burning of fossil fuels adds

Ans...carbon dioxide to the atmosphere.

World became industrialised by burning fossil fuels the carbon dioxide concentration in the atmosphere was about 0.028% tiny compared with oxygen at 21% and nitrogen at 78%,we get a daily supply of heat from the sun the earth normally loses this so the average temperature of the earth remains constant,as humanity adds carbon dioxide into our atmosphere the extra layer isolates the heat and it cannot escape as easily.

5.Q...The two most important alternative energy sources being developed today that are renewable are

Ans...Solar and Wind

Wind power is growing rapidly and is becoming a well recognized renewable energy resource,with the help of wind power to turn turbines that generate electricity can provide a cheap source of energy.Flexible solar cells can be used for residential use, and building solar arrays is becoming popular,energy from the sun is captured using cells made from special materials and then converted into electricity.

6.Q...In an isolated system the total amount of what is conserved.

Ans...Energy

7.Q...The energy in crude oil derives from what original source

Ans...Sunlight

8.Q...A space capsule falling to earth would have

Ans...Both kinetic and potential energies

9.Q...What percentage of energy in the United States is generated by fossil fuels

Ans...60 % to 80 %

10.Q...Kinetic energy is thought of as energy of

Ans...Motion

Kinetic energy is thought of as energy of motion.

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