GUIA DE 2° GRADO
ENVIRONMENTAL
SCIENCE
Alumno: _____________________________________________Grado: 2º _____, Sec: 1
1. Underline the correct choice about Environmental Problems
1. Pollution / Waste is an unwanted change in the environment caused by substances such
as wastes or forms of energy such as radiation.
2. Hazardous / Pollutant is anything that causes pollution.
3.- Garbage, chemicals, high powered wastes, gases and noise are the five kinds of
Pollutants / Resources.
4. Hazardous / Residual wastes are those that can catch fire, corrode, eat trough metal or
make people sick.
5 Hazardous wastes come from Hydroelectric / Nuclear Power plants.
6. Some gases / chemicals are used to treat diseases; others are used in plastics
and preserved food.
7. Two groups of harmful chemicals are CO2 and H3 / CFCs and PCBs.
8. Chemicals / Gases like carbon dioxide, oxygen, nitrogen and others make up the
Earth’s atmosphere.
9. High powered / Noise is a kind of pollutant that affects the senses, it’s harmful to
your ears and
2. Answer these questions about Environmental Problems
1. What’s the name of a resource that can be replaced at the same time it is used?
________________________ _________________________
2. What’s the name of a resource that cannot be replaced or that can be replaced only over thousands or millions of years? ________________________ _________________________
3. What’s the name of organisms that make home in a place outside its natural home?
________________________ _________________________
4. How do we call the presence of too many organisms in an area for the available resources?
_________________________________________
5. How do we call the number and variety of organisms in a given area in a certain period of time?
_________________________________________
6. What’s the name of a place where organisms live? ____________________________
7. What causes or leads problems like soil erosion, water pollution and decreased biodiversity?
Habitat destruction .
8. How do we call the clearing of forest lands to create farms, roads, or cities?
______________________________________________
9. How do we call the pollution that comes from one source only?
________________________ _________________________
10. How do we call the pollution that comes from different sources?
________________________ _________________________
3. Complete the definitions about Environmental Solutions
1. ______________________________ is the preservation and wise use of natural resources.
2. ______________________________ is the less use of natural resources.
3. ______________________________ is when you give something a second use.
4. ______________________________ is the recovery of materials from wastes.
5. ______________________________ strategies are the group of laws and actions people
follow to conserve the Earth’s environment.
6. _______________________________ involves Protecting species and Protecting habitats.
4. Answer these questions about Environmental Solutions
1. What are two examples of conservation? ___________________________________________
________________________________________________________________________________
2. What are the five environmental strategies? _________________________________________
________________________________________________________________________________
________________________________________________________________________________
3. What’s the name of some materials that can be broken down by living organisms like bacteria? _________________________________________
4. What are two examples of alternative power sources of energy? _________________
______________________________________________________________________
5. What are some examples of materials that can be recycled? ____________________ ______________________________________________________________________
6. The use of garbage to make electricity is an example of
__________________ _______________
__________________ _______________
5. Answer these questions about Natural Resources
1. What is any natural material that is used by humans?_____________________________
2. To use the resources only when they’re necessary is an example of...?
________________________________________________________________
3. Water, petroleum, minerals, forests and animals are examples of...?
________________________________________________________________
4.Trees and forests are examples of...?__________________________________________
5. Newspapers, aluminum, paper and plastic are materials that can be...?
________________________________________________________________
6. What's a resource that can be replaced at the same rate at which it is used?
________________________________________________________________
7. What's a resource that is formed at a rate much lower as the rate it is consumed?
________________________________________________________________
8. What do the atmosphere, the oceans and the solid part of the Earth provide?
________________________________________________________________
9. Coal, petroleum and natural gas are examples of...?____________________________
10. To turn off the lights when you don’t use them and ride a bike or walk are examples of...?
________________________________________________________________
6. Complete the definitions about Fossil Fuels
1. __________________________ are natural resources that humans use to generate
energy.
energy.
2. __________________________ is a nonrenewable energy resource formed from
the remains of plants and animals that lived long ago.
3. Three examples of fossil fuels are _________________________________________
____________________________________________________________________
the remains of plants and animals that lived long ago.
3. Three examples of fossil fuels are _________________________________________
____________________________________________________________________
4. We get energy from fossil fuels when ______________________________________.
5. __________________________ is a liquid mixture of complex hydrocarbon compounds
6. Petroleum is known as _____________________ and it's called__________________.
7. __________________________ is a mixture of gaseous hydrocarbons located under
the surface of the Earth.
7. __________________________ is a mixture of gaseous hydrocarbons located under
the surface of the Earth.
8. The main and secondary components of natural gas are _________________________
______________________________________________________________________
9. __________________________ is a solid fossil fuel formed underground from partially
decomposed plant material.
10. _________________________ are rocks through which fluids such as petroleum and
natural gas can move.
11. Where do most petroleoum that the US use come from? ________________________
12. We obtain petroleum and natural gas by ... ___drilling wells into rock_____
13. We obtain petroleum from the ocean by a process called __offshore drilling__
14. We obtain coal by a process called ____strip mining____
15. ______________________________ is rain. slet or snow that has a high concentration
of acids due to pollution.
16. _____________________ is a photochemical haze that forms when sunlight acts
on industrial pollutants and burning fuels.
______________________________________________________________________
9. __________________________ is a solid fossil fuel formed underground from partially
decomposed plant material.
10. _________________________ are rocks through which fluids such as petroleum and
natural gas can move.
11. Where do most petroleoum that the US use come from? ________________________
12. We obtain petroleum and natural gas by ... ___drilling wells into rock_____
13. We obtain petroleum from the ocean by a process called __offshore drilling__
14. We obtain coal by a process called ____strip mining____
15. ______________________________ is rain. slet or snow that has a high concentration
of acids due to pollution.
16. _____________________ is a photochemical haze that forms when sunlight acts
on industrial pollutants and burning fuels.
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