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A short class with Sarah and her students. The other ways are under More.
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Today, we’re going to explore two key processes in the water cycle: evaporation and condensation. Can anyone tell me what evaporation is?
Isn't it when water turns into vapor?
Exactly! It's the process where liquid water heats up and changes into vapor due to heat from the sun. This is often observed on hot days, right? Let's remember this with the acronym 'HEAT' – Heat Energy Activates Transformation. Now, who can explain what happens next?
I think the water vapor cools and turns into clouds. That’s condensation!
Correct! Condensation is when water vapor cools down and becomes liquid, forming clouds. This is important for our next process: precipitation. So far, we've learned that heat causes evaporation, and cooling causes condensation.
Now, can anyone explain what precipitation is?
That's when the condensed water falls back to the Earth as rain or snow, right?
Correct! Precipitation is essential because it replenishes our water sources. After precipitation occurs, what happens to the water on land?
It runs off into rivers, lakes, and oceans!
Great! That's runoff. Remember, it’s how precipitation helps maintain these water bodies. Let’s create a rhyme: 'When it rains down from the sky, it flows to rivers, oh my, oh my!' This can help you remember the connection.
What happens to some of the rainwater after it hits the ground?
Some of it goes into the ground, which is called infiltration!
Exactly! Infiltration is important for groundwater replenishment. Can anyone explain why this is vital for ecosystems?
It's essential for plants to get water to grow. Without it, they can’t survive!
Right! Groundwater sustains many plants and animals. Let's summarize what we've learned: evaporation leads to condensation, which results in precipitation, followed by runoff, and finally infiltration supports our ecosystems.
The process of converting liquid water to vapor through heat energy.
The transformation of water vapor into liquid, resulting in cloud formation.
Water that falls from clouds as rain, snow, or hail.
Surface water that flows into bodies of water.
The process of water passing through the soil into underground reservoirs.
Up in the sky, the water we see, vapor and clouds, that’s the key! Rain falls down, oh what a show, into rivers it goes, away it flows!
Once there was a drop of water named Drippy. He loved playing hide and seek! First, he evaporated, rising high into the sky. Then he condensed with friends in big fluffy clouds. Once they got heavy, they fell as rain and splashed back to Earth, seeping into the ground to help the plants. And so, Drippy lived happily in the water cycle!
Remember EVCR, for Evaporation, Vapor, Condensation, Rain!
DERP: (D)rop goes up - (E)vaporation, then (R)ains down - (P)recipitation.
Term
What is evaporation?
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Term
Define condensation.
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Explain precipitation.
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What is runoff?
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Define infiltration.
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The process where liquid water turns into vapor.
The transformation of water vapor into liquid, forming clouds.
Any form of water that falls from the atmosphere to the Earth.
Water that flows over land into rivers, lakes, or oceans.
The process by which water seeping into the ground replenishes groundwater.
The water cycle consists of key processes such as evaporation, condensation, precipitation, runoff, and infiltration that continuously cycle water through the environment.
This section explores the five essential processes of the water cycle—evaporation, condensation, precipitation, runoff, and infiltration. Each process plays a vital role in the movement and transformation of water within the Earth's hydrosphere, significantly influencing ecosystems and human activities.
The water cycle, also known as the hydrological cycle, describes the continuous movement of water within the Earth and atmosphere. It consists of several key processes that are interconnected and play critical roles in sustaining life on our planet. Understanding these processes is essential for students studying physical geography, particularly within the context of the IB MYP curriculum.
Evaporation: This process involves the conversion of liquid water into vapor due to heat energy from the sun. As water vapor rises into the atmosphere, it cools and eventually condenses.
Condensation: When water vapor cools, it transforms back into liquid water, forming clouds. This process is crucial for precipitation as it gathers moisture in the atmosphere.
Precipitation: This occurs when condensed water droplets in clouds become heavy enough to fall to the Earth. Precipitation can take various forms, including rain, snow, sleet, or hail, depending on temperature and atmospheric conditions.
Runoff: After precipitation, water flows over the land surface, entering rivers, lakes, and oceans. Runoff is essential for replenishing these bodies of water..
Infiltration: Some precipitation seeps into the ground, replenishing groundwater supplies. This process is vital for supporting vegetation and maintaining ecosystems.
Together, these processes depict how water circulates in our environment, influencing climate patterns and the availability of fresh water for consumption and agriculture.