Learn Key Vocabulary

Rate and Study the Words Rate how well you know each word. Then:

Rating Scale

  • 1 = I have never seen this word before.

  • 2 = I am not sure of the word’s meaning.

  • 3 = I know this word and can teach the word’s meaning to someone else.

  • 1. Pronounce the word. Say it aloud several times. Spell it.

  • 2. Study the example.

  • 3. Tell more about the word.

  • 4. Practice it. Make the word your own.

Key Words
cold (cōld) adjective
Photograph of ice floes in the oceanSomething that is cold does not have much heat. The water in the Arctic Ocean is so cold that it freezes.		ocean (ō-shun) noun
Photograph of colorful ocean reef fish
The ocean is a big area of salty water. The ocean is filled with living things.
surface (ser-fes) noun
Illustration of a world map showing continents and oceans
The surface is the outer layer of something. Here you see the oceans and landforms that cover the earth’s surface.		warm (wôrm) adjective
Photograph of a tropical beach by the ocean
When something is warm, it has heat. When the sun shines, the weather gets warm.
world (wirld) noun
Photograph of planet Earth as seen from spaceThe world is where all people live. Our world is the planet Earth.		Practice the Words With a partner, make a Vocabulary Study Card for each Key Word. front
Write the word.
Illustration of the front and back of a Vocabulary Card for use with Key Words
Tell what it means and use it in a sentence.
Use the cards to quiz your partner. Take turns answering.