Your Questions About Green Living

Physical Science? Am I right?

Question 8
How does light travel?
a.) Light only travels in a vacuum and travels faster when the sound source is moving.
b.) Light only travels in a medium and light travels faster when a sound source is stationary.
c.) Light can travel in a vacuum and the speed varies depending on whether the source is moving or stationary.
d.) Light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving.
I think it’s d.

Question 9
When the sound source is moving away from the observer, the observer will hear a
a.) lower pitch due to the change to a higher frequency.
b.) lower pitch due to the change to a lower frequency.
c.) higher pitch due to the change to a higher frequency.
d.) higher pitch due to the change to a lower frequency.
I think it’s a.

Question 10
Which statement correctly describes the relationship between power, voltage, and current?
a.) If voltage is increased, and no other changes are made, power will decrease.
b.) If voltage is increased, and no other changes are made, power will increase.
c.) If current is decreased, and no other changes are made, power will increase.
d.) In order to decrease power, voltage must be decreased.
I think it’s a.

Question 11
You check the weather and find that the winds are coming from the west at 15 miles per hour. This information describes the wind’s
a.) acceleration.
b.) direction.
c.) speed.
d.) velocity.
I think it’s c.

Question 12
What type of energy depends upon the release of energy from splitting atoms?
a.) geothermal power, which is a non-renewable resource.
b.) hydroelectric power, which is a renewable resource.
c.) nuclear power, which is a non-renewable resource.
d.) solar power, which is a renewable resource.
I think it’s c.

Question 13
Select the example that best describes a renewable resource.
a.) All the houses built in the new neighborhood had natural gas available, which will be used for cooking and heating.
b.) My town is powered by electricity that is generated by the energy from the flow of water through a large dam.
c.) Our lawn mower is powered by an engine that uses both oil and gasoline.
d.) The airplane can carry thousands of gallons of jet fuel needed to fly from New York to London.
I think it’s c.

Question 14
Solar panels allow us to harness ___________ energy and convert it to __________ energy to heat water.
a.) chemical; thermal
b.) electromagnetic; thermal
c.) solar; chemical
d.) thermal; electromagnetic
I think it’s b.

Please tell me if I am right I really want a good grade!

In your opinion, what is the best population rate of increase for your particular area over the next 70 years?

I would like the views preferably of your local politicians whatever country you live in – please send them this question. You can substitute ‘your particular area’ for the region you live in. For example if you live in Colorado put Colorado, or if you live in Cornwall, England then put that.

Do not tell them the following: At 4% per year the growth factor over 70 years is 16. That’s 16 times the amount of food, water and perhaps even energy needed to keep the new population in 70 years alive to the same standards you enjoy now. It’s also 16 times all the services you take advantage of now unless of course things get a lot more efficient! If you are young now, consider the impact on your child’s future existence. Taking the current global population growth of just 1.2% per year the growth factor is 2.3. This means a doubling in energy consumption globally, even with some efficiency gains due to technological improvements unless of course oil scarcity kills off billions! In other words if they are truly good at their job they should say (without recourse to advisors – we don’t vote their advisors in do we? No!) zero percent growth or negative ‘growth’ is best. (Why? Because this gives everyone more space, better services.

A good analogy to this is to imagine a bathroom, that is shared by 2 people. Easy. 4 perhaps okay. Tolerable at 6 or 7. But imagine sharing with 25, 50 or 100. That’s like us sharing resources in 70 years time. At just a tiny percent growth per year things get quickly out of hand. But what do our politicians do? They encourage ‘growth’ because the dominant paradigm says ‘growth is good’. But growth in population is not good if you have limited finite resources. Water, food, and energy are mostly limited. Renewable energy even has it limits! So growth is not good…

Let’s see how clever our so called oil magnate licking democratically elected representatives really are? Ask them for their opinion.If they refuse publish the fact in your local newspapers.

Earth ecology?

which one of the following is not a fossil fuel?
A.sandstone C.oil
B.coal D.natural gas

what is the source of hydroelectric power?
A.sun C.water
B.trubine D.tides

which energy do green plants use?
A.water energy C.wind energy
B.hydrogen energy D.solar energy

what is the most common natural gas?
A.propane C.hydrogen
B.methane D.ethanol

tidal power is and example of
A.wind energy C.solar energy
B.water energy D.nonrenewable energy

fossil fuels came from which of the following
A.rocks C.heat and pressure
B.plants D.wood and clay

which one of the following is a renewable resource
A.wood C.coal
B.oil D.natural gas

animals and plants that lived in the oceans formed which fossil fuel
A.bituminous coal C.wood
B.anthracite D.oil

the element that is most abundant as an energy source on our panet is
A.carbon C.oxygen
B.hydrogen D.nitrogen

More biology questions. just a few!! please and thank you 🙂 :)?

77. what is an organism’s biotic potential?
a. the rate at which the population grows
b. the number of offspring that an organism produces over its entire lifespan
c. the age at which an organism reaches sexual maturity
d. the number of individuals in the prereproductive stage
e. the maximum rate of population growth with unlimited resources

78. exponential growth
a. has 3 phases
b. results in accelerating growth
c. produces as “s” shaped growth curve
d. requires limited resources
e. declines over time

79. whihc of the following is an example of a density independent factor.
a. parasitism
b. males fighting for access to females
c. wolf packs in territory disputes
d. spread of West Nile virus among chickadees
e. flooding after heavy rains

81. which of the following is not a renewable resource?
a. fossil fuels
b. food crops
c. water
d. wild game
e. solar energy

82. the world today derives the majoirty of its energy from which of the following sources?
a. coal and oil
b. hydropower and nuclear power
c. hydropower
d. nuclear power
e. wind and solar power

84, which of the following types of compounds have been implicated in ozone depletion?
a. cholorofluorocarbons (CFCs)
b. volatile organic compounds (VOCs)
c. DDT
d. polychlorinated biphenyls (PCBs)
e. chromium

THANKS!!

Help with Homework please ASAP?

Question 1 (Worth 4 points)
[1.02]Based on the maps, which answer best describes the changes to the climate of the northeastern United States between 2005 and 2008?

Some areas within the region got more rainfall in 2005 than in 2008. Overall rainfall has stayed near normal.
Some areas within the region got less rainfall in 2005 than in 2008. Overall rainfall has stayed above normal.
Some areas within the region got little rainfall in 2005 than in 2008. Overall rainfall has stayed below normal.
Some areas within the region got much less rainfall in 2005 than in 2008. Overall rainfall has stayed near drought levels.

Question 3 (Worth 4 points)
[03.04] There were many issues at the Constitutional Convention and the delegates were very dedicated to resolving them. This provides us with a good example of what?
how hard it is for different people to agree on something
a model of how a representative government should work
how the northern and southern states were preparing for war
an idea of how hard it is to create a new form of government

Question 12 (Worth 4 points)
[1.02]What is one thing both grassland and desert ecosystems have in common?
They both have a lack of trees.
They both have arid conditions.
They are both found in the southwest.
They are both found in the Midwest.

Question 15 (Worth 4 points)
[4.04]What effect did fighting both the British and the rebels have on the French during the Haitian Rebellion?
The French troops and supplies were spread thin, and so were not effective.
The French troops were able to improve training methods over the course of the war.
The French troops were not able to provide for so many prisoners of war.
The French troops and leaders had trouble retreating when the fighting increased.

Question 24 (Worth 4 points)
[02.05]Which answer best describes how the British felt about the Boston Tea Party?
They felt it was the first step toward American colonists consenting to living under British rule.
They felt it was an act of terrorism by American patriots showing their opposition to the Tea Act.
They were optimistic about future peace with America since they had lifted the ban on imported tea.
They were angry because Americans convinced Mohawk Indian allies to dump the tea into the harbor.

Question 26 (Worth 4 points)
[1.06]
Use the passage to answer the following question:
Paul Revere’s Ride, an excerpt
by Henry Wadsworth Longfellow
Written April 19, 1860
So through the night rode Paul Revere;
And so through the night went his cry of alarm
To every Middlesex village and farm,—
A cry of defiance, and not of fear,
A voice in the darkness, a knock at the door,
And a word that shall echo for evermore!
Which answer describes this poem?
a secondary source recounting oral histories
a primary source recording events as they happen
a primary source document of one of the participants
a secondary resource describing an event in the past

Question 27 (Worth 4 points)
[1.02]Sustainable forestry is the practice of managing the amount of trees planted and cut down for the use of timber and paper. Which answer best describes how sustainable forestry affects the ecosystems of the United States?
It protects the timber industry from lawsuits.
It helps keep a variety of plants and animals.
It provides people with a renewable source of energy.
It allows people to use as much paper as they want.

Question 28 (Worth 4 points)
[2.02]Which answer best summarizes the effects of the Battle of Quebec?
It gave Native Americans a foothold in the Canadian territory.
It signaled the end of the Spanish presence in the northeast territory.
It allowed French troops much needed experience fighting in unfamiliar terrain.
It led to another victory at Montreal and eventually ended the French and Indian War.

Question 29 (Worth 4 points)
[2.02]What was the main effect of the Treaty of Paris which ended the French and Indian War?
France gained more Canadian territories.
Britain gained more land in North America.
Spain lost all its holdings in North America.
Native Americans lost most of their tribal lands.