ES Final Exam Review #2

Front

What is a meteor?

Back

A meteor is a small rocky or metallic body in outer space that enters the Earth's atmosphere and burns up, creating a bright streak of light in the sky.

Front

What is a hypothesis?

Back

A hypothesis is a proposed explanation for a phenomenon, which can be tested through experimentation.

Front

What are the geosphere and atmosphere?

Back

The geosphere refers to the solid parts of the Earth, including rocks and soil, while the atmosphere is the layer of gases surrounding the Earth.

Front

What are convection currents?

Back

Convection currents are movements of fluid (liquid or gas) caused by differences in temperature and density, often seen in the Earth's mantle and atmosphere.

Front

Where does nuclear fusion occur in the sun?

Back

Nuclear fusion occurs in the core of the sun, where temperatures and pressures are extremely high.

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where life exists, including land, water, and the atmosphere.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the upper mantle.

Front

What is the hydrosphere?

Back

The hydrosphere encompasses all water on Earth, including oceans, rivers, lakes, and water vapor in the atmosphere.

Front

What is the difference between a comet and an asteroid?

Back

A comet is a small icy body that releases gas or dust, forming a tail when near the sun, while an asteroid is a rocky body that orbits the sun.

Front

What is carbon dioxide's role in the atmosphere?

Back

Carbon dioxide is a greenhouse gas that traps heat in the atmosphere, contributing to the greenhouse effect and climate change.