Science 11

Question 1

Which science disciplines contribute to the field of environmental science?

Answer 1

Physical, biological an informational sciences

Question 2

What did Hunter- gatherers do to alter the environment

Answer 2

Set fires to the prairies

Question 3

Which periods in history where the main contributors to the environmental problems?

Answer 3

Industrial revolution

Question 4

What is the definition of environmental science

Answer 4

It is the study of relationships of the natural world and the relationships between organisms and their environments

Question 5

Population growth in the 20th century contributed to which environmental problems?

Answer 5

Resource depletion, pollution and habitat destruction

Question 6

Why is the loss of biodiversity a concern?

Answer 6

Declining number and variety of species in an area

Question 7

What does the law of supply and demand describe?

Answer 7

Describes the relationship between an items availability and its value

Question 8

How do developing countries compare to developed countries?

Answer 8

Developed countries have access to food, high levels of education and employment And high average income.

Developing countries do not have access to healthcare and have unsafe food and water sanitation.

Question 9

What does achieving a sustainable world depend on?

Answer 9

Responsible consumption by developed countries and cooperation between government industry and citizens

Question 10

Solar energy is contained in ___________?

Answer 10

Fossil fuels

Question 11

Which countries consume the most energy per person?

Answer 11

United States and Canada

Question 12

The energy in fossil fuel’s is often converted _________?

Answer 12

Electricity

Question 13

What are the consequences of nuclear energy?

Answer 13

Radioactive waste

Question 14

Where was the most serious nuclear accident in the United States?

Answer 14

Three mile Island in Pennsylvania

Question 15

What is another name for crude oil?

Answer 15

Petroleum

Question 16

Describe the process of nuclear fission.

Answer 16

Fission is the process of an atom splitting into two

Question 17

What are the advantages of nuclear energy?

Answer 17

Reduces the amount of energy generated from fossil fuel’s

Question 18

What are the badges of using fossil fuel’s for energy?

Answer 18

Large amounts of energy, easy to get, easy to transport.

Question 19

Which states have the most cold deposits?

Answer 19

Wyoming, West Virginia, Kentucky, Pennsylvania, Montana

Question 20

What is the disadvantage of internal combustion engines?

Answer 20

Pollution, noise, and size

Question 21

How are nuclear fission and nuclear fusion different?

Answer 21

Fusion is the process work two or more Atoms glad version is the process of an Atom splitting into two

Question 22

What is the definition of environment?

Answer 22

The surrounding or conditions a person plant or animal lives in

Question 23

How many humans are in the world?

Answer 23

7 billion

Question 24

What factors contribute to the US high usage of gasoline

Answer 24

The great recession, gasoline prices and rising incomes

Question 25

What is the origin of all and natural gas?

Answer 25

Sedimentary basins

Question 26

What percentage of the worlds electricity comes from nuclear energy?

Answer 26

14%

Question 27

What are solar collectors and are they considered to be passive or active?

Answer 27

They capture sunlight and transform radiant energy into heat energy. They are passive.

Question 28

What is the fastest growing source of energy in the world?

Answer 28

Wind

Question 29

What is biomass fuel and what is the major source in developing countries?

Answer 29

Organic materials produced in a renewable matter Wood.

Question 30

How does a photovoltaic cell work?

Answer 30

When light energy strikes the solar cell, electrons or knocked loose from the Atoms in the semiconductor material. If electrical conductors are attached to the positive and negative sides, forming an electric current, the electrons can be captured in the form of an electric current. That is electricity.

Question 31

How can people conserve energy in there every day lives?

Answer 31

It's a light homes, use less resources. Wash clothes in Cold water

Question 32

What is geothermal energy?

Answer 32

Heat energy generated and stored in the earth

Question 33

What is passive energy?

Answer 33

Energy that is directly harnessed to achieve a desired goal.

Question 34

Give three examples of biomass fuel

Answer 34

Animal waste, human waste, wood

Question 35

Give 4 sources of renewable energy.

Answer 35

Solar, wind, Hydro and biomass

Question 36

What does ocean thermal energy conservation used to produce electricity

Answer 36

Uses the temperature difference between the cooler deep water in the warmer shallow water to run a heat engine

Question 37

What are the different sources of alternative energy

Answer 37

Hydro, Wind, solar, geothermal and bio

Question 38

What are the problems with using hydrogen as a fuel today?

Answer 38

Expensive, difficult to store, highly flammable

Question 39

What percent of the energy used in the United States is wasted?

Answer 39

84%

Question 40

Are hybrid cars energy efficient? What type of engines to the use? What type of engines do they use?

Answer 40

Yes. Internal combustion engine

Question 41

What are the advantages of using hydrogen as a fuel source?

Answer 41

Renewable, clean energy, non toxic and energy efficient

Question 42

What is the definition of energy efficieny

Answer 42

Using less energy to provide the same service