Snow Science Experiments

We got our first real snowfalls of the year this past week.  Young students get so excited about snow, so I decided to harness that enthusiasm and have some fun in the snow while incorporating science, math, and language arts.

snow science experiments and projects

If you are lucky enough to have it snow while you are in school, this activity is very fun and engaging.  You will need magnifying glasses and/or a magnifying app and frozen sheets of black construction paper.  I place sheets in the freezer a few days ahead of time if the weather is forecasting snow.  Ask students if they think all snowflakes look alike and then tell them you are going to conduct an experiment to find out.  Divide the students into groups and give each group a piece of frozen black construction paper.  Catch snowflakes on the paper.

catching snowflakes on frozen black construction paper

Observe the snowflakes with magnifying glasses.  If using a magnifying app, step inside and quickly use the app to observe the snowflakes.  Take pictures of the magnified snowflakes with the app or take screenshots.

snowflakes magnified

Discuss students’ observations. If you were able to take pictures or screenshots of the snowflakes, allow students to make posters of their snowflakes with Pic Collage or your favorite app or show their screenshots on the whiteboard.  Ask students why they think the snowflakes looked similar but not EXACTLY alike.  Explain that snowflakes start out as crystal shapes that are fairly the same but as they travel down from the sky they encounter things such as dust, vapor, and temperature changes that alter their appearance.  Students can draw the snowflakes they observed and write about their observations and what they learned in their journals.

It is also fun to bring snow inside and allow students to explore and play with it.  Show a cup of snow and ask how to change it from a solid to a liquid.  Then ask how much liquid they think is in the cup of snow.  Have them write their hypotheses or draw lines on a cup to show their water level guess.

cup of snow      waterlevelkidcup

Melt the cup of snow and allow students to compare their hypotheses with the actual results.

amount of liquid in snow

Explain that snow is actually a combination of snow and air and when snow melts, the air escapes.

Another question to pose to students is – “How clean is snow? Where can we find the cleanest and dirtiest snow?”.  Record their ideas and then go outside and gather snow from each place and label the containers.  Melt the snow inside each container and observe each container with magnifying glasses or a magnifying app.  List what you found in each container.  Record and discuss the results and/or have students write about the results and what they learned.

snow science experiment, how clean is snow?

I’ve done this next activity both inside and outside.  The pictures I have are from inside so I will talk about that one first.  We first discuss the density of snow with a few simple demonstrations.  We weigh a loosely packed snowball and then a tightly packed snowball and discuss the results.

snow density      snow density

Then we complete a snowman building STEM activity. The challenge given is “How and where can we build a snowman that will last the longest?”.  Each group is given the same amount of snow along with criteria they must follow.  They construct a snowman in the allotted time period and place it in the area they feel it will last the longest.


I have also done the snowman building activity outside.  Students decide where on the school grounds they think a snowman will last the longest and then build a snowman in that area.  We check on them throughout the day and record the results. Afterwards, students reflect on what they learned.

snowman building STEM snow science

Another favorite snow building activity is igloo building.  First we learn about igloos and watch an igloo building video.  Then the students get to try to construct their own igloos using what they learned.  They are given ice cubes of various sizes along with snow.  They pack snow around an ice cube to form a block, and build igloos with the blocks.

Afterwards students discuss and write about what worked well, what didn’t work well, and what they learned.

snow science igloo building activity

A few other favorites are snow color mixing

color mixing with snow

and the snow volcano (sorry I didn’t get a picture of this but it is an erupting volcano made from snow!).

If you would like more detailed instructions as well as the recording sheets, criteria pages, journal pages, videos, etc. from these experiments as well as a few others click here.

snow science and STEM on sale

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Animals in Winter Observation Activity

Signs of the Winter Season PowerPoint and Emergent Reader Bundle






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