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WorksheetsSNC1WS (Ch 2.1, 2.2, 2.4, 2.5) Quiz
Total questions: 21
Worksheet time: 11mins
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
Explain the differences between food chains and food webs.
Food chains are more complex than food webs.
Food webs show multiple interconnected food chains.
Food chains include abiotic factors.
Food webs are linear sequences of organisms.
What happens to energy as you go up from one trophic level to the next?
Energy increases.
Energy remains the same.
Energy decreases.
Energy is created.
Which of the following is a disadvantage of photosynthesis?
It requires sunlight.
It produces oxygen.
It stores energy in glucose.
It occurs only at night.
What is meant by the term "ecological niche"?
The physical space an organism occupies.
The role and position a species has in its environment.
The number of organisms in an ecosystem.
The abiotic factors affecting an organism.
How would the food web change if the red fox were killed off by rabies?
All species would benefit.
Prey species would increase, and predator species might decline.
No change would occur.
Only plant species would be affected.
What is the primary function of decomposers in an ecosystem?
To produce energy from sunlight.
To break down dead organic matter.
To compete with primary consumers.
To provide shelter for other organisms.
Which of the following best describes the hydrosphere?
The solid outer layer of Earth.
All the water on Earth's surface, including oceans, lakes, and rivers.
The living organisms on Earth.
The gaseous layer surrounding Earth.
How does deforestation impact the carbon cycle?
It increases the amount of carbon stored in trees.
It has no impact on the carbon cycle.
It reduces the amount of carbon stored in trees and increases atmospheric carbon dioxide.
It decreases the amount of carbon dioxide in the atmosphere.
What is the role of producers in an ecosystem?
To provide shelter for animals.
To convert solar energy into chemical energy through photosynthesis.
To consume other organisms.
To decompose organic matter.
Which of the following is a characteristic of a sustainable ecosystem?
High levels of pollution.
Balanced energy flow and nutrient cycling.
Overpopulation of a single species.
Complete absence of predators.
What is the primary source of energy for most ecosystems on Earth?
Solar energy.
Nuclear energy.
Wind energy.
Geothermal energy.
