Unit 2 Test retake

What process describes the formation of layers in proto-Earth due to the collision of solid particles?

• Volcanic outgassing

• Impact accretion

• Radioactive decay

• Nuclear fusion

Which celestial bodies contributed to the presence of water on Earth's surface?

• Asteroids

• Comets

• Moons

• Stars

What event occurred approximately 2.4 billion years ago, resulting from photosynthetic organisms producing oxygen?

• The Great Oxidation Event

• The Cambrian Explosion

• The Ice Age

• The Continental Drift

Which hypothesis suggests that life originated from non-living chemical compounds?

• Biogenesis

• Panspermia

• Abiotic chemical processes

• Spontaneous generation

What was the role of volcanic outgassing in Earth's early atmosphere?

• It removed carbon dioxide

• It released water vapor and gases into the atmosphere

• It generated oxygen through chemical reactions

• It cooled the Earth's surface

How did the development of Earth's hydrosphere impact the biosphere?

• It provided a medium for chemical reactions necessary for life

• It caused the extinction of early life forms

• It led to the formation of mountains

• It increased volcanic activity

What is the primary source of energy that drives the water cycle on Earth?

• Geothermal energy

• Solar energy

• Wind energy

• Tidal energy

Which of the following is a consequence of the Great Oxidation Event?

• Decrease in atmospheric oxygen levels

• Formation of the ozone layer

• Increase in volcanic eruptions

• Disappearance of water bodies

What is the significance of the Miller-Urey experiment in the study of the origin of life?

• It demonstrated the possibility of life on Mars

• It showed that organic molecules could be synthesized from inorganic precursors

• It proved the existence of extraterrestrial life

• It confirmed the theory of evolution

Which process is responsible for the movement of tectonic plates on Earth?

• Convection currents in the mantle

• Gravitational pull from the moon

• Ocean currents

• Wind patterns