IB ESS 7.2

An ecological footprint is a type of a model – what exactly does it reflect?

• The hypothetical area of land required by a population to obtain all the resources needed and assimilate all their wastes.

• The point at which a resource can no longer be exploited without rendering it non-renewable.

• The measure of all waste created by a population at a given period of time.

• The maximum size of a population that an environment can support without detrimental effects.

Tags

NGSS.HS-ESS3-1

NGSS.HS-LS2-1

An Environmental Impact Assessment (EIA) is a detailed study undertaken prior to a development project. What does an EIA include?

• An assessment of environmental, social and economic impacts of the development project, as well as proposals for mitigation of the possible negative effects.

• A valuation of the development project providing guidance on budget planning to the contractors.

• An assessment of the environmental impact of the development project with particular emphasis on the possible losses of biodiversity in the given area.

• An outline of the positive effects that the development project can have for the local community.

Tags

NGSS.HS-ESS3-4

With the rapidly growing human population and constant new pressures on the environment it gradually becomes more difficult to maintain sustainability. Choose the sentence which best explains what sustainability is.

• The exploitation of resources at such rate which allows for their natural replenishment and the recovery of the ecosystem affected by their use.

• The maximum population size that an area can support without detrimental effects.

• Engaging in the prevention of negative effects of human activities on the Earth’s resources through localised actions (recycling of waste, reduction in electricity consumption etc.).

• The area of land needed to provide all of the resources for a person’s lifestyle and to dispose of all their wastes.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5

Layer of reactive gas at 20-30km above the Earth (15-20km at the poles) absorbing UV radiation

• Greenhouse Gases

• Troposphere

• Stratosphere

• Ozone Layer

The breakdown of stratospheric ozone;

I. Can originate from the emission of chlorofluorocarbons (CFCs).

II. Is catalyzed through a free chlorine (Cl) atom.

III. Prevents all UV rays from reaching the earth’s surface.

• I only

• III only

• I,&II

• I,II,& III

How do CFCs affect ozone production?

• UV radiation frees a chlorine atom, which breaks down ozone.

• Infrared radiation frees a chlorine atom, which breaks down ozone.

• UV radiation frees a fluorine atom, which breaks down ozone.

• Infrared radiation frees a chlorine atom, which breaks down ozone.

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-5

Location of the large whole in the ozone.

• Antarctica

• Artic

• Iceland

• Africa

Which is true about ozone formation and destruction? select all that apply

• Its formation and destruction is an example of a dynamic process in nature.

• It forms when a free oxygen atom reacts with a molecule of oxygen.

• UV radiation breaks up ozone by splitting off an oxygen atom.

• Ozone cannot reform once it absorbs UV radiation.

Tags

NGSS.HS-PS4-3

Which agreement allowed for a reduction, and eventual elimination, of CFC production and use?

• Montreal Protoccol

• Kyoto Protoccol

• Paris Agreement

• Minamata convention

Though CFC production has been curtailed, the threat to upper atmosphericozone continues because CFCs

• become harmless quickly.

• destroy ozone for only a short time.

• persist but stop destroying ozone.

• persist and continue to destroy ozone for decades.

Tags

NGSS.HS-ESS3-6