
Your breath is warm and moist. It has different gases. You cannot see these gases. One gas is water vapor [the gas form of water].
When water vapor is cooled, it turns into a liquid.
Photo Credit: Salman Timur/Shutterstock
Raindrops are like prisms. When light goes through a prism, … read more
Rachel Carson was born in 1907. She grew up on … read more
Ruby Bridges was six years old. She had a hard … read more
© 2026 McGraw-Hill Education. All Rights Reserved.