Four students decided they would each model a different part of the water cycle. Hai modeled condensation, Eva modeled evaporation, Peter modeled precipitation, and Joanna modeled runoff. Whose model showed a liquid turning into a gas?

Seth used a model to show how water vapor becomes liquid water in the water cycle.

Which part of the water cycle is he modeling?

Amelia has observed water runoff into the ocean in many places and for many years. The level of the water in the ocean does not seem to have changed. Why?

A model of the water cycle was made using an aquarium with a glass cover, a container of ice cubes, water, and a lamp.

Which part of the water cycle causes the water droplets to form on the glass cover?

Which of the following processes is responsible for changing liquid water into water vapor?

Where is most of Earth’s water located?

When water moves from the ocean water to the atmosphere ________________ is happening.

__________________ occurs when water vapor combines to form water droplets in the clouds.

Once water droplets get heavy enough they fall to Earth's surface during ___________________.

Plants absorb water. Later, some water vapor is let out of the leaves during _____________.

This picture shows what happens to the water molecules during _________________.

This picture shows what happens to the water molecules during _________________.

Which two cause water to move through the water cycle?

What force brings precipitation to the ground?

What has to happen to water for it to evaporate?

What has to happen to water for it to condense?

_______________________ describes the dissolved salt content of a substance.

Which image best shows what happens to create a density current in the Mediterranean Sea?

What is the formula for density?

_________________ occurs when the surface of Earth is worn away by water over time.

Scientists think that the water on Earth came from ________________________ (select ALL that apply).