Worksheetsch 3
Total questions: 10
Worksheet time: 5mins
Which of the following are the four major components of Earth's life-support system?
Geosphere, atmosphere, hydrosphere, biosphere
Lithosphere, stratosphere, cryosphere, ecosphere
Troposphere, mesosphere, thermosphere, exosphere
Mantle, core, crust, lithosphere
What is the primary function of the Earth's atmosphere?
To provide oxygen for marine life
To shield the planet from meteors and block harmful UV radiation
To generate Earth's magnetic field
To regulate the Earth's core temperature
Which spheres of the Earth are included in the biosphere?
Atmosphere, hydrosphere, and geosphere
Atmosphere, lithosphere, and stratosphere
Hydrosphere, lithosphere, and troposphere
Geosphere, stratosphere, and mesosphere
What is the study of how organisms interact with each other and their nonliving environment called?
Biology
Ecology
Chemistry
Physics
What is the smallest unit of a chemical element that exhibits its chemical properties?
Molecule
Atom
Cell
Organism
Which of the following is an example of a biotic component in an ecosystem?
Rocks
Sunlight
Plants
Water
What is the main source of energy for producers during photosynthesis?
Oxygen
Carbon dioxide
Light energy
Water
What role do decomposers and detritivores play in nutrient cycling?
They consume living plants to produce energy.
They break down dead organic matter into simpler substances.
They prevent the decomposition of organic material.
They produce oxygen through photosynthesis.
What is the process through which elements and compounds that make up nutrients move continually through air, water, soil, rocks, and living organisms within ecosystems?
Photosynthesis
Nutrient cycles
Cellular respiration
Energy transfer
How are human activities affecting nutrient cycles?
They are enhancing the efficiency of these cycles.
They are disrupting these cycles.
They are creating new nutrient cycles.
They are eliminating the need for these cycles.
