This document provides information about forests. It defines a forest as an area with many trees and notes that forests can be found all over the world, with the type varying by location such as tropical rainforests, coniferous forests, and deciduous forests. Forests occur naturally but can be positively or negatively impacted by human behavior through careful replanting and conservation or overharvesting. Forests serve as habitat for many land organisms and are important for recycling oxygen, providing wood for construction and fuel.

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3. A forest is any area with a lot ofA forest is any area with a lot of
trees. There are forests all over thetrees. There are forests all over the
world. The type of forest variesworld. The type of forest varies
depending on the location of thedepending on the location of the
forest: for example, there areforest: for example, there are
tropical rain forests, coniferoustropical rain forests, coniferous
forests, and deciduous forests.forests, and deciduous forests.
ForestsForests

4. ForestsForests
Forests occur naturally, but theyForests occur naturally, but they
can be affected positively andcan be affected positively and
negatively by human behavior. Ifnegatively by human behavior. If
a forest is carefully replanteda forest is carefully replanted
and allowed to grow, it can existand allowed to grow, it can exist
in balance. If the forest is cutin balance. If the forest is cut
down faster than it can growdown faster than it can grow
back, then it will be used upback, then it will be used up
quickly.quickly.

5. ForestsForests
Forests serve as home toForests serve as home to
many of the organismsmany of the organisms
that live on the land.that live on the land.
Forests are also veryForests are also very
important because theyimportant because they
are major contributors toare major contributors to
recycling and cleaningrecycling and cleaning
the world supply ofthe world supply of
oxygen. Forests alsooxygen. Forests also
provide wood, which isprovide wood, which is
useful both as auseful both as a
construction materialconstruction material
and as a fuel source.and as a fuel source.

6. 1. What is a forest?1. What is a forest?
2. Where can forests be found?2. Where can forests be found?
3. Are forests a renewable resource?3. Are forests a renewable resource?
4. How can forests be used as an4. How can forests be used as an
energy source?energy source?
5. In what ways are forests a good5. In what ways are forests a good
source of energy?source of energy?
6. What are the disadvantages to using6. What are the disadvantages to using
forests as a source of energy?forests as a source of energy?
7. How do you use the resource of7. How do you use the resource of
forests in your life, if at all?forests in your life, if at all?
Questions AboutQuestions About
ForestsForests

7. Answers toAnswers to
ForestsForests
1. What is a forest?1. What is a forest?
A forest is an area with a lot of trees.A forest is an area with a lot of trees.
2. Where can forests be found?2. Where can forests be found?
Forests can be found all over the world.Forests can be found all over the world.
3. Are forests a renewable resource?3. Are forests a renewable resource?
Yes, if they are carefully replanted andYes, if they are carefully replanted and
allowed to grow. If it is cut down fasterallowed to grow. If it is cut down faster
than it can grow, then it is not renewable.than it can grow, then it is not renewable.
4. How can forests be used as an energy4. How can forests be used as an energy
source?source?
The wood can be burned for fuel.The wood can be burned for fuel.

8. Answers toAnswers to
ForestsForests
5. In what ways are forests a good source5. In what ways are forests a good source
of energy?of energy?
It can be renewable.It can be renewable.
6. What are the disadvantages to using6. What are the disadvantages to using
forests as a source of energy?forests as a source of energy?
It pollutes; cutting down trees takes awayIt pollutes; cutting down trees takes away
animal homes and affects the oxygen inanimal homes and affects the oxygen in
the world.the world.
7. How do you use the resource of forests7. How do you use the resource of forests
in your life, if at all?in your life, if at all?
Answers will vary.Answers will vary.

9. Fossil FuelsFossil Fuels
Fossil fuels take millions ofFossil fuels take millions of
years to form. They are theyears to form. They are the
product of the fossilizedproduct of the fossilized
remains of dead plants andremains of dead plants and
animals that have beenanimals that have been
exposed to the heat andexposed to the heat and
pressure deep within thepressure deep within the
earth’s crust. There are manyearth’s crust. There are many
types of fossil fuels, such astypes of fossil fuels, such as
petroleum (gasoline), naturalpetroleum (gasoline), natural
gas, and coal.gas, and coal.

10. FossilFossil
FuelsFuels
Fossil fuels are arguablyFossil fuels are arguably
one of the most valuableone of the most valuable
natural resources innatural resources in
modern times. It ismodern times. It is
estimated that 86 percent ofestimated that 86 percent of
the world’s energy comesthe world’s energy comes
directly from burning fossildirectly from burning fossil
fuels. Fossil fuels are thefuels. Fossil fuels are the
source of energy for almostsource of energy for almost
every machine, includingevery machine, including
the generators that producethe generators that produce
electric energy.electric energy.

11. FossilFossil
FuelsFuels
Because fossil fuels take soBecause fossil fuels take so
long to form, they are beinglong to form, they are being
consumed faster than theyconsumed faster than they
can be produced. Fossilcan be produced. Fossil
fuels are a major contributorfuels are a major contributor
to air pollution becauseto air pollution because
when they are burned theywhen they are burned they
release many dangerousrelease many dangerous
gases such as nitrogengases such as nitrogen
dioxide, methane, anddioxide, methane, and
carbon dioxide.carbon dioxide.

12. QuestionsQuestions
AboutAbout
Fossil FuelsFossil Fuels
1.1. What creates or causes fossilWhat creates or causes fossil
fuels?fuels?
2. Where can fossil fuels be found?2. Where can fossil fuels be found?
3. Are fossil fuels a renewable3. Are fossil fuels a renewable
resource?resource?
4. How can fossil fuels be used as an4. How can fossil fuels be used as an
energy source?energy source?
5. In what ways are fossil fuels a5. In what ways are fossil fuels a
good source of energy?good source of energy?
6. What are the disadvantages to6. What are the disadvantages to
using fossil fuels as a source ofusing fossil fuels as a source of
energy?energy?
7. How do you use the resource of7. How do you use the resource of
fossil fuels in your life, if at all?fossil fuels in your life, if at all?

13. AnswerAnswer
s tos to
FossilFossil
FuelsFuels
1. What creates or causes fossil fuels?1. What creates or causes fossil fuels?
Fossil fuels are the product of the fossilizedFossil fuels are the product of the fossilized
remains of dead plants and animals thatremains of dead plants and animals that
have been exposed to the heat and pressure.have been exposed to the heat and pressure.
2. Where can fossil fuels be found?2. Where can fossil fuels be found?
They are found deep within the earth’s crust.They are found deep within the earth’s crust.
3. Are fossil fuels a renewable resource?3. Are fossil fuels a renewable resource?
No. Theoretically they are, but as they takeNo. Theoretically they are, but as they take
so long to form they cannot possibly beso long to form they cannot possibly be
replaced at the rate they are consumed.replaced at the rate they are consumed.
4. How can fossil fuels be used as an energy4. How can fossil fuels be used as an energy
source?source?
They are burned to create energy.They are burned to create energy.

14. 5. In what ways are fossil fuels a good5. In what ways are fossil fuels a good
source of energy?source of energy?
They are currently producing 86% of theThey are currently producing 86% of the
world’s energy.world’s energy.
6. What are the disadvantages to using6. What are the disadvantages to using
fossil fuels as a source of energy?fossil fuels as a source of energy?
They pollute, they are not renewable.They pollute, they are not renewable.
7. How do you use the resource of fossil7. How do you use the resource of fossil
fuels in your life, if at all?fuels in your life, if at all?
Answers will vary.Answers will vary.
AnswersAnswers
aboutabout
FossilFossil
FuelsFuels

15. SolarSolar
EnergyEnergy
The sun is the closestThe sun is the closest
star to Earth. It bringsstar to Earth. It brings
heat and light to theheat and light to the
world. Some areas ofworld. Some areas of
the world, such asthe world, such as
those closest to thethose closest to the
equator, have moreequator, have more
sun than others.sun than others.

16. SolarSolar
EnergyEnergy
The sun shines naturallyThe sun shines naturally
but it is not affected bybut it is not affected by
human activity. It cannothuman activity. It cannot
be used up. However, itsbe used up. However, its
intensity varies with theintensity varies with the
seasons, and it is notseasons, and it is not
available at night.available at night.

17. SolarSolar
EnergyEnergy
The sun’s rays are usedThe sun’s rays are used
for energy by organismsfor energy by organisms
that undergothat undergo
photosynthesis. Nearlyphotosynthesis. Nearly
every organism on theevery organism on the
planet gets energyplanet gets energy
through photosynthesis,through photosynthesis,
directly or indirectly.directly or indirectly.
There are also ways thatThere are also ways that
people can utilize thepeople can utilize the
energy that the sunenergy that the sun
provides.provides.

18. SolarSolar
EnergyEnergy
We can use solarWe can use solar
power in simplepower in simple
(facing the sun to get(facing the sun to get
warm, usingwarm, using
greenhouses to growgreenhouses to grow
food, etc.) and morefood, etc.) and more
complex (solar panelscomplex (solar panels
for heating) ways.for heating) ways.

19. 1. What creates or causes solar1. What creates or causes solar
energy?energy?
2. Where can solar energy be2. Where can solar energy be
found?found?
3. Is solar energy a renewable3. Is solar energy a renewable
resource?resource?
4. How can solar energy be used4. How can solar energy be used
as an energy source?as an energy source?
5. In what ways is solar energy a5. In what ways is solar energy a
good source of energy?good source of energy?
6. What are the disadvantages to6. What are the disadvantages to
using solar energy as a sourceusing solar energy as a source
of energy?of energy?
7. How do you use the resource of7. How do you use the resource of
solar energy in your life, if at all?solar energy in your life, if at all?
Questions AboutQuestions About
Solar EnergySolar Energy

20. Answers toAnswers to
Solar EnergySolar Energy
1. What creates or causes solar1. What creates or causes solar
energy?energy?
Solar energy comes from the sun.Solar energy comes from the sun.
2. Where can solar energy be2. Where can solar energy be
found?found?
It can be found anywhere on Earth,It can be found anywhere on Earth,
in greater concentration closer toin greater concentration closer to
the equator.the equator.
3. Is solar energy a renewable3. Is solar energy a renewable
resource?resource?
Yes, it cannot be used up.Yes, it cannot be used up.
4. How can solar energy be used4. How can solar energy be used
as an energy source?as an energy source?
It can be used for warmth, for light,It can be used for warmth, for light,
and via solar panels to generateand via solar panels to generate
electricity.electricity.

21. Answers onAnswers on
Solar EnergySolar Energy
5. In what ways is solar energy a5. In what ways is solar energy a
good source of energy?good source of energy?
It is renewable, it doesn’t causeIt is renewable, it doesn’t cause
pollution.pollution.
6. What are the disadvantages to6. What are the disadvantages to
using solar power as a sourceusing solar power as a source
of energy?of energy?
It doesn’t work at night.It doesn’t work at night.
7. How do you use the resource of7. How do you use the resource of
solar energy in your life, if atsolar energy in your life, if at
all?all?
Answers will vary.Answers will vary.

22. Wind is caused byWind is caused by
the uneven heatingthe uneven heating
of the atmosphere.of the atmosphere.
Some areas of theSome areas of the
world, such as costalworld, such as costal
regions, have moreregions, have more
wind than otherswind than others
because the terrainbecause the terrain
of the area isof the area is
relatively flat andrelatively flat and
has few obstacles tohas few obstacles to
block the wind fromblock the wind from
blowing.blowing.
WindWind

23. WindWind
The wind blows naturally – it is notThe wind blows naturally – it is not
caused by human activity, and itcaused by human activity, and it
cannot be used up.cannot be used up.
The power of the wind drivesThe power of the wind drives
sailboats. It has been used tosailboats. It has been used to
power windmills that grind grain.power windmills that grind grain.
Windmills can also use the circularWindmills can also use the circular
movement of the blades to turn amovement of the blades to turn a
turbine. This is increasingly usedturbine. This is increasingly used
as a means of generatingas a means of generating
electricity.electricity.

24. WindWind
Wind power does not makeWind power does not make
greenhouse gas emissions.greenhouse gas emissions.
It does not directly causeIt does not directly cause
pollution. However, criticspollution. However, critics
of wind power say a largeof wind power say a large
number of windmills couldnumber of windmills could
cause problems forcause problems for
animals, especiallyanimals, especially
migratory birds. Somemigratory birds. Some
people think the windmillspeople think the windmills
are unattractive.are unattractive.

25. 1. What creates or causes wind?
2. Where can wind be found?
3. Is wind a renewable resource?
4. How can wind be used as an energy
source?
5. In what ways is wind a good source of energy?
6. What are the disadvantages to using wind as a
source of energy?
7. How do you use the resource of wind in your
life, if at all?
QuestionsQuestions
AboutAbout
WindWind

26. 1. What creates or causes wind?
Wind is caused by the uneven heating of the
atmosphere.
2. Where can wind be found?
It can be found everywhere, though it is greater in
coastal regions and other relatively flat terrains.
3. Is wind a renewable resource?
Yes, because it cannot be used up.
4. How can wind be used as an energy source?
Wind can power windmills to power turbines to make
electricity.
Answers toAnswers to
WindWind

27. 5. In what ways is wind a good source of energy?
It doesn’t cause pollution and it is renewable.
6. What are disadvantages to using wind as a
source of energy?
It could hurt some animals and some people think the
windmills are ugly.
7. How do you use the resource of wind in your life,
if at all?
Answers will vary.
Answers toAnswers to
WindWind