Across
- 2. this channel carries small pieces of rock that will collect in a triangle-shaped area (2 words, no space between them)
- 4. How you should greet the planet Mars (it's more than 1 word, no spaces)
- 5. we are looking for evidence that this used to exist on Mars in the past (2 words, no space between them)
- 7. the name of the rock that is made out of sediments and natural cement
- 8. the name of the rock that is made out cooled lava
Down
- 1. the part of a planet that can carve landforms into the geosphere
- 3. this channel makes new, black rock inside the channel and at the end in a triangle-shaped area (2 words, no space between them)
- 6. a tool used by scientists to test idea