Notes, summaries, assignments, exams, and exercises for Geology for Secondary education

Global Warming: A Critical Reality

Global warming is no longer a problem of the future; it is a situation that we must stop immediately, or the destruction of the planet will be irreversible. Droughts, hurricanes, hunger, poverty, and destruction are some of the terrible consequences that global warming causes on our planet. It is in our hands to participate actively in curbing its effects if we want future generations to inherit a world as we know it today—or even better.

Environmental Consequences

• Climate Instability: The accumulation of polluting gases causes temperatures to rise, leading to erratic climate patterns, droughts, and an increased risk of fires that result in deforestation and desertification.
• Extreme Weather: Higher temperatures

There will come soft rains and the smell of the ground,
and swallows circling with their shimmering sound;
and frogs in the pools singing at night,
and wild plum-trees in tremulous white;
robins will wear their feathery fire
whistling their whims on a low fence-wire
and not one will know of the war, not one
will care at last when it is done
not one would mind, neither bird nor tree
if mankind perished utterly;
and spring herself, when she woke at dawn
would scarcely know that we were gone

Meeting at Night

the gray sea and the long black land; a
and the yellow half-moon large and low b
and the startled little waves that leap c
in fiery ringlets from their sleep c
as I gain the cove with pushing prow b
and quench its speed i' the slushy sand a

then a mile of warm...

Carbon Cycle

CO2 is produced by combustion of biomass and fossilized organic matter.

Animals such as reef-building corals and molluscs have hard parts composed of CaCO3 and can become fossilized in limestone.

Carbon Return to Atmosphere

Processes by which carbon returns to the atmosphere include:

• Combustion
• Oxidation
• Respiration
• Volcanic eruption
• Decomposition
• Release from the Ocean

Carbon Reservoirs and Sinks

Major reservoirs and sinks for carbon include: coal, soil, gas/oil, limestone, and the atmosphere.

Carbon dioxide is converted by autotrophs into carbohydrates via photosynthesis and returned to the atmosphere as CO2 through respiration (these are carbon fluxes).

Carbon in Aquatic Ecosystems

In aquatic ecosystems, carbon exists as dissolved CO2 and...

Key Environmental and Biological Concepts

• Abiotic: Nonliving components of an ecosystem, such as soil, water, air, light, nutrients, and the like.
• Biscayne Aquifer: A surficial aquifer consisting of a shallow layer of highly permeable limestone located under a portion of South Florida, covering approximately 4,000 square miles.
• Circadian Rhythms: A biological process that displays an endogenous, entrainable oscillation of about 24 hours. These 24-hour rhythms are driven by a circadian clock.
• Climate: The long-term average pattern of local, regional, or global weather.
• Condensation: The transformation of water vapor into a liquid state.
• Critical Daylength: The classification of plants based on their flowering response to the length of daylight.
• Day-

Key Definitions in Hydrology and River Systems

River Features and Drainage Systems

River Channel: The bed and sides of a river form the river channel.

Drainage Basin: The area of land drained by a river.

Confluence: The point where a river and a tributary meet.

Tributary: A smaller river which joins a larger river.

Source: The starting point of a river.

Mouth: The end point of a river, where it enters the sea or a lake.

Watershed: A ridge of highland which determines to which drainage basin the water flows.

The Hydrological Cycle (Water Cycle Processes)

Hydrological Cycle: The continuous movement of water on, above, and below the surface of the Earth (the water cycle).

Evaporation: The change in state from a liquid (such as water) to a gas (such as water...

Energy Vocabulary: Key Terms

• Barrage: Presa
• Wave: Ola
• Coal: Carbón
• Tidal: Marea
• Commissioned: Encargado
• Heating: Calefacción

Energy Classifications

• Renewable: Sun, water, wave, wind
• Non-renewable: Fossil fuels, coal, oil, petroleum, biofuel, plutonium, uranium

Types of Energy

• Electrical energy, fire, fossil fuels, gas power, geothermal energy, greenhouse effect, hydraulic power, hydroelectric energy, kinetic energy (energía cinética), magnetic energy, nuclear energy, solar energy, steam power (de vapor), tidal power (de marea), water power, wave power (de olas), wind power

Equipment for Energy Production

• Atomic energy plant, gas station, gasworks (fábrica de gas), generating station, generator, heat exchanger (termocambiador), hydroelectric scheme

Environmental Terms Defined

Environment

It's the natural world that surrounds us.

Drought

It's the lack of water and it's related to environmental problems.

Supply

It's the place where I obtain certain resources.

Population

People that live in a determinate place.

Dams

Constructions that are prepared to contain water.

Recycling

It is the process by which you use old material to create a new product.

Environmental Problems

Pollution

It's when the air, water, or earth are damaged or spoiled by gases, toxic waste, or garbage.

Famine

When there is a lack of water.

Species Becomes Extinct

The species disappear completely.

Deforestation

When trees are cut down massively.

The Greenhouse Effect

The gradual warming of the Earth's surface caused by an increase in pollution...

Our Place in the Cosmos: Solar System & Earth's Motion

The Milky Way is one of the many galaxies that exist in the Universe. Our Solar System, with the Sun at its center, is a small part of this vast galaxy. The Earth is one of eight planets orbiting the Sun. These eight planets are divided into two groups:

• Inner Planets: (e.g., Mercury, Venus, Earth, Mars)
• Outer Planets: (e.g., Jupiter, Saturn, Uranus, Neptune)

Satellites are celestial bodies that orbit a planet; for instance, the Moon is the Earth's natural satellite. Additionally, asteroids are small bodies of rock and metal that orbit the Sun, primarily found in the asteroid belt.

Earth's Movements and Their Effects

Rotation of the Earth

The Earth spins (or rotates) on an imaginary axis that...

Terrestrial Ecosystems

Natural Terrestrial Ecosystem Examples

These ecosystems are shaped primarily by natural processes:

• High Mountains: Temperatures vary significantly between winter and summer. In winter, the mountains are covered with snow, and there is little food available. Consequently, many animals migrate.
• Deciduous Forests: Found in regions with cold winters and abundant rainfall. The trees lose their leaves annually, which makes the soil rich and fertile.

Man-Made Ecosystem Examples

These ecosystems are significantly influenced or created by human activity:

• Cultivated Land: An ecosystem in which cereals and other crops are grown. These ecosystems contain a rich biocenosis. The biotope varies depending on the climate.
• Parks and Gardens:

What Is an Index Fossil?

An index fossil is a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found.

Age of the Earth

The Earth is approximately 4.54 billion years old.

Difference Between a Mold and a Cast

A cast is taken of a footprint, while a mold is made of a bone or other part. One is the reverse of the other; in a mold, you are creating a negative impression to eventually produce a copy of the original object.

What Is an Unconformity?

An unconformity is a buried erosion surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous.

What Is a Disconformity?

A disconformity is the surface of a division between parallel rock strata,...