Question

water cycle

transpiration
water vapor lost through
the leaves of plants.

groundwater
water held present beneath
earth’s surface

runoff
the movement of water on
land to bodies of water.

list ways water enters the atmosphere:

list ways water exits the atmosphere:

what role does groundwater play in the water cycle?

how can runoff contribute to the pollution of waterways?

Explanation:

1. List ways water enters the Atmosphere:

• Evaporation: Liquid water (from oceans, lakes, rivers, etc.) turns into water vapor and rises into the atmosphere.
• Transpiration: As defined in the image, water vapor is lost through the leaves of plants, and this water vapor enters the atmosphere.
• Sublimation: Solid water (like snow or ice in very cold, dry conditions) can directly turn into water vapor without melting first (e.g., snow in a cold, dry winter day can sublimate). Though not defined in the image, it's a common way water enters the atmosphere in some environments. Also, evaporation from soil and other wet surfaces (like wet roads after rain) contributes.

2. List ways water exits the Atmosphere:

• Precipitation: Water vapor in the atmosphere condenses into liquid (rain) or solid (snow, sleet, hail) and falls back to the Earth’s surface.
• Condensation (leading to precipitation): Water vapor cools and changes from gas to liquid (forming clouds) and then eventually falls as precipitation. Also, some water vapor can be absorbed by particles or surfaces in the atmosphere, but precipitation is the main exit.

3. What role does groundwater play in the water cycle?

Groundwater (water held beneath Earth’s surface, as defined in the image) is a reservoir of water. It is recharged by infiltration (water from precipitation or surface water seeping into the ground). Then, it can discharge back to the surface as springs, or it can flow into rivers, lakes, or oceans, thus returning to the surface water system and continuing the water cycle. It also provides a steady supply of water to ecosystems and human uses (like wells for drinking water) and helps maintain base flow in rivers during dry periods.

4. How can runoff contribute to the pollution of waterways?

Runoff is the movement of water on land to bodies of water (as defined in the image). As runoff flows over the land, it can pick up pollutants such as:

• Chemicals from agricultural fields (fertilizers, pesticides)
• Oil, grease, and heavy metals from urban streets (from cars, industries)
• Sediment from eroded soil (which can cloud water and harm aquatic life)
• Waste from landfills or improper waste disposal sites

When this polluted runoff enters waterways (rivers, lakes, oceans), it introduces these contaminants, leading to water pollution, harming aquatic organisms, and degrading water quality for human use (like drinking water sources, recreation) and ecosystems.

Answer:

1. List ways water enters the Atmosphere:

• Evaporation: Liquid water (from oceans, lakes, rivers, etc.) turns into water vapor and rises into the atmosphere.
• Transpiration: As defined in the image, water vapor is lost through the leaves of plants, and this water vapor enters the atmosphere.
• Sublimation: Solid water (like snow or ice in very cold, dry conditions) can directly turn into water vapor without melting first (e.g., snow in a cold, dry winter day can sublimate). Though not defined in the image, it's a common way water enters the atmosphere in some environments. Also, evaporation from soil and other wet surfaces (like wet roads after rain) contributes.

2. List ways water exits the Atmosphere:

• Precipitation: Water vapor in the atmosphere condenses into liquid (rain) or solid (snow, sleet, hail) and falls back to the Earth’s surface.
• Condensation (leading to precipitation): Water vapor cools and changes from gas to liquid (forming clouds) and then eventually falls as precipitation. Also, some water vapor can be absorbed by particles or surfaces in the atmosphere, but precipitation is the main exit.

3. What role does groundwater play in the water cycle?

Groundwater (water held beneath Earth’s surface, as defined in the image) is a reservoir of water. It is recharged by infiltration (water from precipitation or surface water seeping into the ground). Then, it can discharge back to the surface as springs, or it can flow into rivers, lakes, or oceans, thus returning to the surface water system and continuing the water cycle. It also provides a steady supply of water to ecosystems and human uses (like wells for drinking water) and helps maintain base flow in rivers during dry periods.

4. How can runoff contribute to the pollution of waterways?

Runoff is the movement of water on land to bodies of water (as defined in the image). As runoff flows over the land, it can pick up pollutants such as:

• Chemicals from agricultural fields (fertilizers, pesticides)
• Oil, grease, and heavy metals from urban streets (from cars, industries)
• Sediment from eroded soil (which can cloud water and harm aquatic life)
• Waste from landfills or improper waste disposal sites

When this polluted runoff enters waterways (rivers, lakes, oceans), it introduces these contaminants, leading to water pollution, harming aquatic organisms, and degrading water quality for human use (like drinking water sources, recreation) and ecosystems.