WEBVTT

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By now, learners should understand the water cycle

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and why multiple sources of data
are needed to study Earth Systems.

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Learners will take part in the following
activities to apply their knowledge.

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The first activity engages students
in understanding condensation.

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The materials needed are a large empty
metal can, enough ice to fill the can,

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a clear pitcher or beaker, water, food
coloring, and a white paper towel or napkin.

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Put food coloring and water into the
clear pitcher and ice into the metal can.

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Have students make predictions for what they think

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will happen when the colored water
is poured into the ice-filled can.

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Once predictions are made, pour
the colored water into the can.

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Wait for a few minutes and make observations.

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Ask students to consider why moisture
is on the outside of the can.

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They can use a paper towel or a napkin
to wipe some condensation off the can.

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Where did the source of this water come from?

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In the second activity, students will measure,
record, and graph the size of raindrops.

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The materials needed are white copy paper or
light colored cardstock, a ruler, and a pencil.

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On a rainy day, learners should hold their
paper flat outside and collect a few raindrops.

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After returning to a dry area, they should trace
the raindrops shapes and measure their diameters.

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A color key based on sizes can be used,
and students can color in their raindrops.

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What is the best type of graph
that can display this data?

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[Music]

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While students are collecting
and tracing raindrops,

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educators can use a pan of
flour to collect raindrops.

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Have learners pour the flour
through a sieve to separate lumps.

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These lumps model 3D raindrops.

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Let students compare the 3D
raindrops to their drawings.

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How is it beneficial to
collect data in different ways?

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By taking part in these activities, learners
demonstrate a thorough understanding of the

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water cycle and why multiple data sources
are useful when studying Earth Systems.

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For more guidance, please refer
to the NASA eClips™ Real World:

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Measuring Raindrops Educator Guide.

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