Science - 2018-19

3.9 - Water Cycle

The student will investigate and understand the water cycle and its relationship to life on Earth. Key concepts include

a)  there are many sources of water on Earth;

  • identify major water sources for a community, including rivers, reservoirs, and wells. Describe the major water sources for the local community.   Bloom's Level: Knowledge / Understand

b)  the energy from the sun drives the water cycle;

  • identify the sun as the origin of energy that drives the water cycle.  Bloom's Level: Knowledge

c)  the water cycle involves several processes;

  • describe the processes of evaporation, condensation, and precipitation as they relate to the water cycle.  Bloom's Level: Understand / Apply
  • construct and interpret a model of the water cycle.   Bloom's Level: Create / Analyze

d)  water is essential for living things; and

  • identify the different ways that organisms get water from the environment.  Bloom's Level: Understand
  • identify and communicate the importance of water to people and to other living organisms.  Bloom's Level: Understand

e)  water on Earth is limited and needs to be conserved.

  • explain methods of water conservation in the home and school.  Bloom's Level: Analyze
  • analyze possible sources of water pollution in their neighborhoods, at school, and in the local community. This includes runoff from over-fertilized lawns and fields, oil from parking lots, eroding soil, and animal waste.  Bloom's Level:  Analyze


Adopted: 2010

BIG IDEAS

Water is an essential limited natural resource on Earth.


UNDERSTANDING THE STANDARD

  • The water cycle is the movement of water from the ground to the air and back to the ground by evaporation, condensation, and precipitation. The energy that drives this cycle comes from the sun.
  • During the water cycle, liquid water is heated and changed to a gas (water vapor). This process is called evaporation. The gas (water vapor) is cooled and changed back to a liquid. This process is called condensation. Water as a liquid or a solid falls to the ground as precipitation.
  • Our water supply on Earth is limited. Pollution reduces the amount of usable water; therefore, the supply should be conserved carefully.
  • Water is a simple compound essential for life on Earth. Living cells are mostly water. In each cell, the chemicals necessary for life are dissolved in water.

ESSENTIALS

Essential Questions:

·  What are the main water sources on Earth?

·  How does the sun's energy influence water on Earth?

·  How can you describe the water cycle?

·  Why is water conservation necessary?

·  How can you conserve water?

·  How does water pollution occur?

In order to meet this standard, it is expected that students will

  • identify the sun as the origin of energy that drives the water cycle.
  • describe the processes of evaporation, condensation, and precipitation as they relate to the water cycle.
  • construct and interpret a model of the water cycle.
  • identify the different ways that organisms get water from the environment.
  • identify major water sources for a community, including rivers, reservoirs, and wells. Describe the major water sources for the local community.
  • explain methods of water conservation in the home and school.
  • identify and communicate the importance of water to people and to other living organisms.
  • analyze possible sources of water pollution in their neighborhoods, at school, and in the local community. This includes runoff from over-fertilized lawns and fields, oil from parking lots, eroding soil, and animal waste.

KEY VOCABULARY

analyze

animal waste

atmosphere

condensation

conservation

continent

describe

energy

environment

eroding soil

evaporation

explain

gas

identify

interpret

limited supply

liquid

model

oceans

oil

organisms

pollution

precipitation

reservoirs

rivers

runoff

solid,

sun

water cycle

water droplets

water sources

water vapor

wells

Updated: May 20, 2016