1. The Waterfall vocabulary
Theme 1, Story 3
Key Vocabulary

2. What is a waterfall?
Quiz

3. boulders Large, rounded rocks
We set up camp on a sandy flat beside a pool in a ring of boulders.
Quiz

4. canyon
A deep valley with steep walls on both sides, formed by running water.
Then we waded against the little rapids deep into the canyon.
Quiz

5. cauldron A large pot used for boiling
The waterfall roared by our ears into a great rumbling, boiling cauldron far below.
Quiz

6. rapids
A group of small waterfalls in a river where the water flows very fast.
We hiked farther upstream, against little rapids, picking our way among slippery boulders.
Quiz

7. scouted Observed or explored carefully for information.
I scouted a way, alongside the falls, and then we climbed like mountain goats.
Quiz

8. ledges Flat spaces like shelves on the sides of cliffs or rock walls.
We inched our way up and up - the tips of our toes gripping thin ledges, our fingers finding cracks.
Quiz

9. sheer
Very steep
I never felt more anxious - seeing my parents clinging to that sheer rock - or more proud, either.
Quiz

10. Quiz Yourself! boulders canyon cauldron rapids ledges sheer scouted
waterfall
End