Galaxy Guide Answer Key
Answer Key
Galaxy Guide Worksheet • Mission #101
TEACHER REFERENCE
Mission Vocabulary Answers
1. Orbit
The curved path of a planet or object around a star.
2. Solar System
The Sun and all the planets and objects that move around it.
3. Gas Giant
A very large planet made mostly of gases rather than rock.
Reading Check Answers
1. What is at the center of our solar system?
The Sun
2. Which planet is known for its beautiful rings?
Saturn
3. Based on the text, why is Mars called the "Red Planet"?
Acceptable Answer:
Mars is called the Red Planet because of its rusty soil.
Postcard from Space: Sample Response
Students should select one planet and use at least two adjectives.
SAMPLE
Dear Mom and Dad,
I am visiting Mars today! The ground is covered in rusty soil and it looks very dusty. There are huge volcanoes here that are taller than any mountains on Earth. It is a strange and beautiful world.
Wish you were here!
Grading Criteria:
- Identifies a planet from the text.
- Uses 2+ descriptive adjectives.
- Writing is legible and related to the topic.









