dantes peak

Dante's Peak (1997)

 
Concept featured in clip: pH, acidity
Location of clip:

 

Play Flickclip Here

Summary of clip: This clip begins with Dr. Harry Dalton checking the acidity of the water in the lake by Dante’s Peak and ends with the children finding two dead bodies in the hot springs.

Connection of flickclip to the concept: This flickclip is a great way to apply pH and acidity outside the laboratory. Although presented in a somewhat violent manner, it exhibits the serious dangers of acid to humans.
Suggestions to teachers:
1. Suggested questions for students when viewing the clip:

a. Dr. Dalton's device shows that the pH of the lake is 3.48. How does that compare to other household items?

b. Dr. Dalton asks Rachel how long the trees surrounding the lake have been dead. What do you think may have caused the trees to die?

c. The children commented that the air around the hot spring was smelly. What causes the smell and why?

2. You can show this clip and have students research hot springs to see what the typical pH level of the water is. Many cultures enjoy bathing in hot springs, but the pH level of those springs is obviously not harmful to the human body. What must the pH level have been in the hot spring in the clip to kill people?

3. Design a lab where students determine the pH level of several household objects: lemon juice, milk, water, soap, etc.