The reader would find the definition in the glossary, a mini dictionary at the back of the book.
What is the text feature that uses slanted type to emphasize some words?
Some Common Text Features
Moving in Waves
Waves are motions that carry energy. Some waves move through water, others move through gases in the air.
Water Waves
Imagine that a small pebble falls into a pond. The pebble transfers energy to the water that creates a wave that ripples across the pond's surface. Imagine that pebbles continue to fall into the water. The waves will continue to form.
Sound Waves
Sound waves carry energy from vibrations. That is how the sound energy from a loud boom of thunder moves through the air to your ears. Sound waves can move through air, water, or even solid materials.
Light Waves
Light, or electromagnetic, waves can travel faster than 186,000 miles (300 million meters) per second. Imagine a story night. Waves of light from a flash of lightning reach your eyes before your ears hear the thunder!
First you see lightning, then you hear the thunder!