ALEX Classroom Resource

  

The Water Cycle

  Classroom Resource Information  

Title:

 The Water Cycle

URL:

 https://www.acs.org/content/acs/en/education/resources/k-8/inquiryinaction/fifth-grade/chapter-1-investigating-matter-at-the-particle-level/lesson-1-4--the-water-cycle.html

Content Source:

 Other
American Chemical Society
Type: Lesson/Unit Plan

Overview:

In this lesson, students will be able to develop and explain a particle-level model to describe evaporation and condensation in the context of the water cycle. Students use water, ice, and plastic wrap to model the ocean and cold upper atmosphere. Students use observations from their model to explain the processes of evaporation and condensation that drive the water cycle.

Content Standard(s):
Science
SC2015 (2015)
Grade: 5
1 ) Plan and carry out investigations (e.g., adding air to expand a basketball, compressing air in a syringe, dissolving sugar in water, evaporating salt water) to provide evidence that matter is made of particles too small to be seen.

NAEP Framework
NAEP Statement::
P4.3: Matter exists in several different states; the most common states are solid, liquid, and gas. Each state of matter has unique properties. For instance, gases are easily compressed while solids and liquids are not. The shape of a solid is independent of its container; liquids and gases take the shape of their containers.

NAEP Statement::
P4.4: Some objects are composed of a single substance; others are composed of more than one substance.

NAEP Statement::
P8.1: Properties of solids, liquids, and gases are explained by a model of matter that is composed of tiny particles in motion.

Unpacked Content
Scientific And Engineering Practices:
Planning and Carrying out Investigations
Crosscutting Concepts: Scale, Proportion, and Quantity
Disciplinary Core Idea: Matter and Its Interactions
Evidence Of Student Attainment:
Students:
  • Provide evidence based on investigation results that matter is made of particles too small to be seen.
Teacher Vocabulary:
  • Investigation
  • Variable
  • Data
  • Hypothesis
  • Conclusion
  • Matter
  • Describe
  • Observe
  • Evidence
  • Immensely
  • Bulk matter
  • Particle
Knowledge:
Students know:
  • Matter is made of particles too small to be seen Matter too small to be seen still exists and may be detected by other means.
  • Gasses are made of matter particles that are too small to see, and are moving freely around in space (this can explain many observations, including the inflation and the shape of the balloon, and the effects of air on larger particles or objects).
  • The behavior of a collection of many tiny particles of matter and observable phenomena involving bulk matter (e.g., an expanding balloon, evaporating liquids, substances that dissolve in a solvent, effects of wind).
  • There is a relationship between bulk matter and tiny particles that cannot be seen.
Skills:
Students are able to:
  • Identify the phenomenon under investigation.
  • Identify evidence that addresses the purpose of the investigation.
  • Collaboratively plan the investigation.
  • Collect and analyze the data.
Understanding:
Students understand that:
  • Natural objects exist from the very small to the immensely large.
AMSTI Resources:
AMSTI Module:
Matter and Interactions
Alabama Alternate Achievement Standards
AAS Standard:
SCI.AAS.5.1- Recognize that matter is made of particles too small to be seen.
Science
SC2015 (2015)
Grade: 6
Earth and Space Science
7 ) Use models to construct explanations of the various biogeochemical cycles of Earth (e.g., water, carbon, nitrogen) and the flow of energy that drives these processes.

NAEP Framework
NAEP Statement::
E12.11: Earth is a system containing essentially a fixed amount of each stable chemical atom or element. Most elements can exist in several different chemical forms. Earth elements move within and between the lithosphere, atmosphere, hydrosphere, and biosphere as part of biogeochemical cycles.

NAEP Statement::
E8.14a: Water, which covers the majority of Earth's surface, circulates through the crust, oceans, and atmosphere in what is known as the water cycle.

NAEP Statement::
E8.14b: Water evaporates from Earth's surface, rises and cools as it moves to higher elevations, condenses as clouds, falls as rain or snow, and collects in lakes, oceans, soil, and underground.

Unpacked Content
Scientific And Engineering Practices:
Developing and Using Models
Crosscutting Concepts: Stability and Change
Disciplinary Core Idea: Earth's Systems
Evidence Of Student Attainment:
Students:
  • Use models to explain the various biogeochemical cycles of Earth and the flow of energy that drives these processes.
Teacher Vocabulary:
  • Biogeochemical
  • Biotic
  • Abiotic
  • Atom
  • Water cycle
  • Carbon cycle
  • Nitrogen cycle
  • Chemical compound
  • Hydrogen
  • Oxygen
  • Gravity
  • Atmosphere
  • Water vapor
  • Crystallize
  • Transpiration
  • Evaporation
  • Condensation
  • Precipitation
  • Glacier
  • Aquifer
  • Ice sheet
  • Organism
  • Decompose
  • Respiration
  • Element
  • Chemical process
  • Ecosystem
  • Geosphere
  • Carbon dioxide
  • Methane
  • Photosynthesis
  • Fossil fuel
  • Nitrogen
  • Carbon
  • Amino acid
  • Protein
  • DNA
  • Molecule
  • Bacteria
  • Fertilizer
  • Livestock
  • Nitrate
Knowledge:
Students:
  • The cycle of atoms between living and non-living things is known as a biogeochemical cycle.
  • Biogeochemical cycles interact through biotic and abiotic processes.
  • Biotic involves living or once living things such as plants, animals, and bacteria.
  • Abiotic involves nonliving things like air, rocks, and water.
  • Biogeochemical cycles may include, but are not limited to, the water, carbon, and nitrogen cycles.
  • The water cycle is the continuous process by which water is circulated throughout the earth and the atmosphere.
  • Water is a chemical compound made up of the elements hydrogen and oxygen.
  • Global movements of water and its changes in form are propelled by sunlight and gravity.
  • Energy from the sun drives the movement of water from the Earth (e.g., oceans, landforms, plants) into the atmosphere through transpiration and evaporation.
  • Water vapor in the atmosphere can cool and condense to form rain or crystallize to form snow or ice, which returns to Earth when pulled down by gravity.
  • Water continually cycles among land, ocean, and atmosphere via transpiration, evaporation, condensation and crystallization, and precipitation, as well as downhill flows on land.
  • Gravity causes water on land to move downhill (e.g., rivers and glaciers) and much of it eventually flows into oceans.
  • Some liquid and solid water remains on land in the form of bodies of water, glaciers and ice sheets or can be stored below ground in aquifers.
  • Some water remains in the tissues of plants and other living organisms, and this water is released when the tissues decompose. Water is also released by plants through transpiration and by other living organisms through respiration.
  • Carbon is an element found in the oceans, air, rocks, soil and all living organisms.
  • Carbon is the fundamental building block of life and an important component of many chemical processes.
  • In a process called the carbon cycle, carbon is exchanged among Earth's oceans, atmosphere, ecosystem, and geosphere.
  • Carbon is present in the atmosphere primarily attached to oxygen in a gas called carbon dioxide (CO2), but is also found in other less abundant but climatically significant gases, such as methane (CH4).
  • With the help of the Sun, through the process of photosynthesis, carbon dioxide is pulled from the air to make plant food.
  • Through food chains, the carbon that is in plants moves to the animals that eat them. When an animal eats another animal, the carbon is transferred.
  • When plants and animals die, their bodies, wood, and leaves decay bringing the carbon into the ground. Some become buried miles underground and will become fossil fuels in millions and millions of years.
  • Organisms release carbon dioxide gas through a process called respiration.
  • When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.
  • The oceans, and other bodies of water, soak up some carbon from the atmosphere.
  • Nitrogen is an element found in living things like plants and animals.
  • Nitrogen is also an important part of non-living things like the air and the soil.
  • Nitrogen atoms move slowly between living things, dead things, the air, soil and water.
  • The continuous process by which nitrogen is exchanged between organisms and the environment is called the nitrogen cycle.
  • Most of the nitrogen on Earth is in the atmosphere as molecules of nitrogen gas (N2).
  • All plants and animals need nitrogen to make amino acids, proteins, and DNA, but the nitrogen in the atmosphere is not in a form that they can use.
  • The molecules of nitrogen in the atmosphere can become usable for living things when they are broken apart during lightning strikes or fires, by certain types of bacteria, or by bacteria associated with bean plants.
  • Most plants get the nitrogen they need to grow from the soils or water in which they live. Animals get the nitrogen they need by eating plants or other animals that contain nitrogen.
  • When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use. Other types of bacteria are able to change nitrogen dissolved in waterways into a form that allows it to return to the atmosphere.
  • Certain actions of humans can cause changes to the nitrogen cycle and the amount of nitrogen that is stored in the land, water, air, and organisms.
  • The use of nitrogen-rich fertilizers can add too much nitrogen in nearby waterways as the fertilizer washes into streams and ponds. The waste associated with livestock farming also adds large amounts of nitrogen into soil and water. The increased nitrate levels cause plants to grow rapidly until they use up the supply and die. The number of plant-eating animals will increase when the plant supply increases and then the animals are left without any food when the plants die.
Skills:
Students are able to:
  • Use a model of the various biogeochemical cycles and identify the relevant components.
  • Describe the relationships between components of the model including the flow of energy.
  • Articulate a statement that relates a given phenomenon to a scientific idea, including the various biogeochemical cycles of Earth and the flow of energy that drives these processes.
Understanding:
Students understand that:
  • The transfer of energy drives the motion and/or cycling of matter of the various biogeochemical cycles.
AMSTI Resources:
AMSTI Module:
Understanding Weather and Climate
Alabama Alternate Achievement Standards
AAS Standard:
SCI.AAS.6.7- Use a model to explain the water cycle, including evaporation, condensation, and precipitation; recognize that the sun provides the energy which drives the water cycle.
Tags: biogeochemical cycle, condensation, evaporation, investigation, particle, particlelevel model, water cycle
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Author: Stephanie Carver
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