What is this skill?
The water cycle is the path water takes as it moves between the ground, the air and the sky, and it never really stops. The sun heats water in oceans, lakes and puddles, and some of it turns into vapor and rises. This is evaporation. High in the air the vapor cools and forms tiny droplets, which makes clouds, and that is condensation. When the droplets gather and grow heavy they fall as rain, snow, sleet or hail, which is precipitation. The water collects in oceans, rivers and underground and the cycle begins again. The same grade also meets the rock cycle: igneous, sedimentary and metamorphic rocks.
In this practice a child answers questions such as "Water turning into vapor and rising into the air is called ___" (evaporation), "What are clouds made of?" (tiny water droplets or ice crystals) and "Which one is a kind of precipitation?" (snow). One ordering puts the cycle in order starting when the sun heats the water, and a sort asks whether a term belongs to the water cycle or the rock cycle. For rocks, a child matches igneous to lava or magma that cools, sedimentary to layers of sand, mud and shells pressed together, and metamorphic to rock changed by heat and pressure. Other questions ask where most evaporation on Earth happens (oceans), what weathering is (wind and water slowly breaking rock into tiny pieces), why drops form on a cold glass (water vapor in the air condensed on it), and whether fossils are usually found in sedimentary rock (they are). A final true-or-false asks if the water you drink today may have been rain thousands of years ago, which it may.
Why it matters
The water cycle explains weather, rivers, farms and drinking water, so it connects to nearly everything a child sees outdoors. It is also the first cycle that involves all three states of matter at once, tying back to what children learned about solids, liquids and gases.
The rock cycle adds a much slower clock. Mountains, beaches and fossils are all part of a process that takes a very long time, which is a good way to stretch a child's sense of time.
The vocabulary matters. Evaporation, condensation, precipitation, igneous, sedimentary and metamorphic are words that appear in textbooks and on tests for years, and each one has a simple meaning once a child sees it happen.
Common mistakes
- Mixing up evaporation and condensation. Evaporation is liquid to gas, as in a puddle drying. Condensation is gas to liquid, as in drops on a cold glass.
- Thinking clouds are made of smoke or cotton. They are made of tiny water droplets or ice crystals.
- Assuming rain is the only precipitation. Snow, sleet and hail count, too.
- Mixing up the three rocks. A memory hook is that igneous starts hot and melted, sedimentary is layers, and metamorphic means changed.
How to help at home
- Put a few drops of water on a plate on a sunny sill and mark the edge. Check back in a few hours and ask where the water went.
- Set a cold drink on the table on a warm day and watch drops form on the outside. Ask where the water came from.
- Draw the water cycle together on a big sheet, with arrows, and let your child label each step with its word.
- Collect rocks on a walk and sort them by looks. Talk about which might have formed in layers and which have grains or bands.
Worked examples
These are real questions from the Tutorsaurus water cycle and rock cycle practice, with the answers worked out.
Example 1
Water vapor cooling and forming clouds is called ___.
Choices: Condensation, Collection, Evaporation
Answer: Condensation. Condensation is water vapor cooling and turning back into tiny liquid drops. Clouds are made this way.
Example 2
Fossils are usually found in sedimentary rock.
Answer: True. True! Plants and animals get buried in layers of sediment. Those layers become sedimentary rock with fossils inside.
Example 3
Order how a sedimentary rock forms.
The pieces, mixed up: Pieces settle in layers / Rocks break into tiny pieces / Layers are pressed into rock / Pieces are carried by water
Answer: Rocks break into tiny pieces → Pieces are carried by water → Pieces settle in layers → Layers are pressed into rock. Rocks weather into pieces, water carries them, they settle in layers, and the layers are pressed into new rock.
Printable worksheet (PDF) — one page of questions from this practice that work on paper, easier ones first, with an answer key on page 2. Free to print, no sign-up.