Unit 1 Flash Cards

Front

major components of the Earth’s atmosphere

Back

• nitrogen • oxygen • carbon dioxide • argon • water vapour

Front

Where is the ozone layer located?

Back

stratosphere

Front

What is the ozone layer, and what role does it play in absorbing ultraviolet radiation?

Back

• Absorbs ultraviolet (UV) radiation, particularly UV-B and UV-C, which are harmful to living organisms.

• Protects life on Earth by reducing the amount of UV radiation reaching the surface, preventing DNA damage, skin cancer, cataracts, and harm to ecosystems.

Front

outline the natural greenhouse effect that maintains the Earth’s ambient temperature

Back

ultraviolet radiation (shortwave radiation) passes through the Earth’s atmosphere and is absorbed by the Earth’s surface

some energy is re-emitted back into the atmosphere as infrared radiation (longwave radiation)

greenhouse gases absorb some of this infrared radiation and prevent it from leaving the atmosphere

Front

biotic components of an ecosystem

Back

• biotic components: – producers, consumers (primary, secondary and tertiary) and decomposers

all living things

Front

abiotic components of an ecosystem

Back

temperature, humidity, water, oxygen, salinity, light, pH

Front

examples of biotic interactions

Back

• • Intra-specific competition: Individuals of the same species compete for resources (food, space, mates).

    • Example: Two lions fighting over territory.

  • Inter-specific competition: Different species compete for similar resources.

    • Example: Squirrels and birds competing for seeds in a forest.

• Grazing:

  • Herbivores feed on plants, often affecting plant growth and distribution.

    • Example: Grasshoppers eating grass, potentially limiting plant regeneration.

• Predation:

  • One organism (predator) kills and eats another (prey).

    • Example: A hawk hunting a rabbit.

Front

what captures light energy for photosynthesis

Back

chlorophyll

Front

state the word and chemical equations for photosynthesis

Back

• carbon dioxide + water → glucose + oxygen

• 6CO2 + 6H2 O → C6 H12 O6 + 6O2

Front

limiting factors for photosynthesis

Back

availability of water, concentration of carbon dioxide and the availability of light