In this lesson, we will watch a video that explains how scientists attempt to determine the shape of the universe.
![Universe](https://s3.amazonaws.com/smrtenglish.com/core/STEM140/unit04/4-3m1.jpg)
Part One: Vocabulary
In partners or groups, discuss the words below:
- infinite / infinity
- dwarf galaxy
- open universe
- pi
- digits
- closed universe
- mass
- curvature
- sphere
- circumnavigate
- rapid
- analogous
- saddle
Part Two: Video
Watch the video.
![](https://s3.amazonaws.com/smrtenglish.com/shared-images/16x9.png)
![](https://s3.amazonaws.com/smrtenglish.com/shared-images/16x9.png)
Exercise
Open the exercise to begin the activity. Follow the instructions in the document.