SNC1WS (Ch 2.1, 2.2, 2.4, 2.5) Quiz

Explain how Earth's mass is related to its ability to have an atmosphere.

• Earth's mass is too small to hold an atmosphere.

• Earth's mass is sufficient to exert gravitational force, which holds the atmosphere.

• Earth's mass is irrelevant to its atmosphere.

• Earth's mass is only important for its magnetic field.

In what way does the presence of an atmosphere enhance conditions for life on Earth's surface?

• It provides a vacuum for sound to travel.

• It blocks all sunlight from reaching the surface.

• It protects from harmful solar radiation and helps regulate temperature.

• It increases the gravitational pull on Earth.

Define the term "lithosphere."

• The layer of gases surrounding Earth.

• The rigid outer layer of Earth, including the crust and upper mantle.

• The water component of Earth.

• The living organisms on Earth.

Which of the following is considered an ecosystem?

• A backyard pond.

• All the cats in your neighbourhood.

• A vase of cut flowers.

• A single tree.

Classify "bacteria" as either a biotic or abiotic feature.

• Biotic

• Abiotic

What energy-rich substance is produced by green plants during photosynthesis?

• Oxygen

• Glucose

• Carbon dioxide

• Water

Describe the ecological niche of humans.

• Humans are primary producers.

• Humans are decomposers.

• Humans are omnivores and have a wide range of habitats.

• Humans are herbivores and live only in forests.

What trophic level contains the greatest biomass in most ecosystems?

• Tertiary consumers

• Secondary consumers

• Primary consumers

• Producers

How are photosynthesis and cellular respiration related?

• They are unrelated processes.

• Photosynthesis produces oxygen, which is used in cellular respiration.

• Cellular respiration produces glucose, which is used in photosynthesis.

• Both processes occur only in animals.

Would you consider a large city to be a population or a community?

• Population

• Community