Planet Earth Exam

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Questions and Answers

What is the outermost layer of the Earth called?

Crust (correct)

Core

Lithosphere

Mantle

Transform boundaries are a type of tectonic plate boundary.

True

What causes the seasons on Earth?

The Earth's tilted axis

The ______ layer of the Earth is liquid.

Outer core Signup and view all the answers

What percentage of the Earth's surface is covered by water?

About 70% Signup and view all the answers

Which of the following is NOT a layer of the atmosphere?

Lithosphere Signup and view all the answers

Match the following terms related to the water cycle with their correct descriptions:

Evaporation = Process where liquid water turns into vapor Condensation = Process where water vapor turns into liquid Precipitation = Water falling back to Earth in various forms Transpiration = Water vapor released from plants Signup and view all the answers

Moon phases directly affect climate.

False Signup and view all the answers

What role do decomposers play in the carbon cycle?

They break down dead organisms and release carbon back into the environment. Signup and view all the answers

Why are coral reefs important to the ocean ecosystem?

They provide habitat for many species and protect coastlines. Signup and view all the answers

What would happen if gravity stopped working?

The Moon would crash into Earth Signup and view all the answers

Tectonic plates can push against each other, forcing the Earth's crust upward.

True Signup and view all the answers

What are convection currents in the mantle?

Convection currents are movements within the Earth's mantle caused by the heat from the core, which drives the movement of tectonic plates. Signup and view all the answers

The __________ influences the amount of sunlight different parts of the planet receive.

tilt of the Earth Signup and view all the answers

Match the following phenomena with their causes:

Day and Night = Earth's rotation Seasons = Earth's tilt Phases of the Moon = Moon's orbit around Earth Tides = Moon's gravitational pull Signup and view all the answers

Which of the following is NOT a reason the poles experience long periods of darkness or daylight?

Earth's rotation speed Signup and view all the answers

The lithosphere interacts with the asthenosphere, impacting plate tectonics.

True Signup and view all the answers

Why do we see different shapes of the Moon from Earth?

The different shapes of the Moon, or lunar phases, are due to the relative positions of the Earth, Moon, and Sun, causing varying amounts of the Moon's surface to be illuminated. Signup and view all the answers

The __________ describes the relationship between Earth's distance from the Sun and its atmospheric conditions.

tilt and position Signup and view all the answers

List two potential impacts of rising sea levels on coastal ecosystems.

<ol> <li>Loss of habitat for marine and coastal species. 2. Increased salinity affecting freshwater sources.</li> </ol> Signup and view all the answers

Study Notes

Planet Earth Exam - Unit 3

Outermost layer of Earth: Crust
Types of tectonic plate boundaries: Convergent, Divergent, Transform
Causes of seasons on Earth: Earth's tilted axis
Liquid layer within Earth: Outer core
Percentage of Earth's surface covered by water: Approximately 70%
Atmosphere Layers (not a layer): Lithosphere
Main cause of ocean currents: Wind patterns
Earth's magnetic field cause: Movement of molten iron in the outer core
Factors that do not affect climate: Moon phases
Non-renewable resource: Coal
How Earthquakes help understand Earth's interior: Generating seismic waves passing through Earth
Role of decomposers in the carbon cycle: Break down dead organisms, releasing carbon back into the environment
Climate change effects on water cycle: Increased frequency and intensity of precipitation in some regions
Importance of coral reefs: Providing habitat for many species, protecting coastlines
Earth's tilt causes (regarding seasons): Uneven distribution of sunlight
Tectonic plates' effect on mountain formation: Pushing Earth's crust upward from collisions
Convection currents in the mantle impact on plate tectonics: Contributing to plate movement; crucial for understanding earthquakes and volcanoes.
Moon phases: Moon's orbit around Earth, resulting in varying illumination
Day and night cause: Earth's rotation
Difference between inner and outer core: Physical state (inner is solid, outer is liquid), impact on magnetic field
Lithosphere and asthenosphere interaction: Crucial for plate tectonics, as the lithosphere interacts with the softer, flowing asthenosphere.
Earth's shape and gravity: Not a perfect sphere; shape affects gravity variation at different locations
Earth's rotation's impact on the day and night cycle: The rotation of the Earth causes day and night.
Significance of the equator's effect on climate zones: The equator receives the most direct sunlight, influencing climate patterns.
Polar Regions' extended periods of darkness/light: Earth's tilt and revolution cause varying lengths of daylight.
Moon's impact on tides: The Moon's gravitational pull causes tides; two high tides and two low tides daily due to the alignment of the Earth, Moon, and Sun.

Essay Questions

Relationship between Earth's rotation, tilt and revolution, and their effects: These movements affect seasons, day/night cycles, and the phases of the Moon. These processes are important for sustaining life on Earth
Impact of climate change on coastal ecosystems: Rising sea levels and increased ocean temperatures will impact the plants and animals.
Possible solutions for preserving coastal ecosystems: Solutions may include creating protective barriers against rising sea levels and managing ocean temperatures. Challenges in implementation might include cost, feasibility, and acceptance by the public/governments.

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Description

Test your knowledge of Unit 3 in Planet Earth with this comprehensive quiz. Topics include Earth's layers, tectonic plates, climate factors, and ocean currents. Prepare to explore the intricacies of our planet and understand its processes better.