1. Vocabulary for Astronomy Domain 6

2. gas Sentence: The sun is an enormous ball of hot gas.
Definition: A gas, unlike a solid or a liquid, is a thin, sometimes invisible, substance through which objects can pass.
Sentence: The sun is an enormous ball of hot gas.

3. horizon
Definition: The horizon is the line in the distance where it looks like the land or a body of water meets the sky.
Sentence: In the read-aloud you heard, “Each morning at dawn, the sun appears on the horizon in the eastern sky.”

4. dusk
Definition: Dusk is the time of day just after sunset, when the sky is not as dark as it will be.
Sentence: This man is skiing at dusk. There is still a little bit of light, but it’s getting dark.

5. Definition: Very, very old or long, long ago
ancient
Definition: Very, very old or long, long ago
Sentence: In ancient times, Egyptians built the pyramids.

6. Definition: The way someone or something looks.
appearance
Definition: The way someone or something looks.
Sentence: In the read-aloud you heard, “The appearance of the moon changes depending on where it is in its orbit.”

7. launch
Definition: Launch means to lift or push an object with force, or hard.
Sentence: Many people watch the space shuttle launch into the air.

8. Definition: committed to something; don’t want to give up
determined
Definition: committed to something; don’t want to give up
“President Kennedy and the NASA scientists were determined to succeed at sending astronauts to the moon.

9. abundant Sentence: Our planet Earth has an abundant amount of water.
Definition: more than enough
Sentence: Our planet Earth has an abundant amount of water.

10. Definition: Sort or put into a group with other similar objects
categorize
Definition: Sort or put into a group with other similar objects
Sentence: My teacher asked me to categorize this stack of books as fiction or nonfiction for our classroom library.