21
Lesson 21 of 84 ยท Earth's History
ExperimentGlaciers: Rivers of Ice
What You'll Learn
River systems shape the land over time. Young rivers have steep, V-shaped valleys. Mature rivers meander across floodplains. Old rivers have wide, flat valleys and deltas.
Key Words
- mineral
- climate
- atmosphere
Materials Needed
- magnifying glass
- newspaper
- spray bottle
- cups
- thermometer
- rain gauge
Safety First
- Do not mix unknown chemicals together.
- Tie back long hair before starting the experiment.
Steps
Step 1 โ Read
Read about Earth's History and write down three key facts.
Step 2 โ Do
Set up a weather station: use a thermometer, rain gauge (a jar with a ruler), and wind sock (a plastic bag on a stick). Record data for one week.
Step 3 โ Observe
Note any unexpected results and think about why they happened.
Step 4 โ Record
Share your findings with the class or a partner and discuss what you learned.
Check Your Understanding
Question 1
1 of 3What is a volcano?
