The Phosphorus Cycle
An educational worksheet for Grade 9 Science students to understand the phosphorus cycle, its stages, and its importance in ecosystems.
Includes
Standards
Topics
The Phosphorus Cycle
Name:
Date:
Score:
Read each question carefully and provide your best answer. For multiple-choice questions, circle the correct option.
1. Which of the following is the primary reservoir for phosphorus on Earth?
Atmosphere
Oceans
Rocks and sediments
Living organisms
2. How does phosphorus primarily enter terrestrial ecosystems?
Atmospheric deposition
Volcanic eruptions
Weathering of rocks
Photosynthesis
1. The phosphorus cycle is unique among biogeochemical cycles because it does not involve a significant phase.
2. When organisms die and decompose, phosphorus is returned to the soil or water through the action of .
3. The process by which plants absorb phosphorus from the soil is called .
1. Eutrophication can be caused by an excess of phosphorus in aquatic ecosystems.
True
False
2. Phosphorus is a major component of DNA and RNA.
True
False
1. Briefly explain the role of weathering in the phosphorus cycle.
2. Describe two ways human activities impact the phosphorus cycle.
Related Worksheets
Earth's Systems Worksheet
Explore the interconnected systems of Earth, including the geosphere, hydrosphere, atmosphere, and biosphere, and their interactions.
Continental Drift Worksheet
Explore the theory of continental drift, evidence supporting it, and its impact on Earth's geology with this Grade 9 science worksheet.
Relative Dating Worksheet
Explore the principles of relative dating in geology, including superposition, original horizontality, and cross-cutting relationships, to determine the sequence of geological events.
Cycles of Matter Worksheet
Explore the fundamental cycles of matter, including the water, carbon, and nitrogen cycles, and their importance in sustaining life on Earth.
Plate Tectonics Worksheet
Explore the fundamental concepts of plate tectonics, including plate boundaries, landforms, and geological phenomena.
Planet Earth Inquiry
A Grade 9 Science worksheet focusing on the structure, composition, and processes of Planet Earth.
Fossil Fuels Worksheet
Explore the formation, types, uses, and environmental impacts of fossil fuels with this comprehensive Grade 9 science worksheet.
Seafloor Spreading Worksheet
This worksheet covers key concepts of seafloor spreading, including evidence, processes, and related geological features, suitable for Grade 9 science students.