the viscosity of materials that come out of that will determine the type of volcano that will be formed out of the materials

1. Activity 4 Viscosity Race
Objectives:
* Determine the viscosity of some liquids;
and
* Describe the flow of gas in different
liquids
Materials:
Folder
Plastic glass
Drinking straws
Tray
Timer
Water
Cooking oil
Shampoo
conditioner

2. Procedure:
1. Before doing the activity, predict which liquid ( water, cooking oil, shampoo, conditioner ) takes the
least amount of time to reach the tray. Which liquid will take most of the time?
2. Place the folder inside the tray forming slope
3. Pour water on top of the folder. Record the time it takes for the water to reach the tray
4. Perform three times for each materials.
Liquid First Second Third Average
water
Cooking oil
shampoo
conditioner
Travel Time of some Liquids TIME TRAVEL IN SECONDS

3. GUIDE QUESTIONS;
1. Is your prediction correct?
2. Which liquid is the most Viscous? How do you know?
3. Which liquid is the least Viscous?
4. Explain VISCOSITY in your own words
5. Compare how these liquids flow with how you think lava flows. Why
do some type of lava
travel faster than others?

4. viscosity
Is the resistance of liquid to flow

5. As lava flows, it cools and begins to
harden, its ability to flow and
eventually stops

6. Magma with high silica content are more viscous
than those with low silica content. Magma that
contains less silica is relatively fluid and travels far
before solidifying

9. Types of volcanic eruptions
Volcanoes erupt differently. They are generally classified as wet or dry
depending on the magma`s water content.
Volcanoes are described according to the style of eruption.

10. Phreatic or hydrothermal
eruption
Is a steam-driven eruption as the hot rocks come in contact with water.
It is short-lived, characterized by ash columns but may be an onset of a
larger eruption.

12. Phreatomagmatic eruption
Is a violent eruption due to the contact between water and magma. As a
result, a large column of very fine ash and high-speed and sideway
emission of pyroclastic called base surges are observed.

14. Strombolian eruption
A periodic weak to violent eruption characterized by fountain of lava

16. Vulcanian eruption
Characterized by tall eruption columns that reach up to 20 km high with
pyroclastic flow and ashfall tephra

18. Plinian eruption
Excessively explosive type of eruption of gas and pyroclastic.

20. In your own words, what is VISCOSITY?
What are the factors that affect the
viscosity of magma?
What are the different types of volcanic
eruptions?