Geology Quiz Flashcards

Front 1

Where is the focus?

Back 1

The focus is a point under the earth where the rocks break under stress and the plates collide and start a earthquake.

Front 2

Where is the epicenter?

Back 2

The epicenter is where the earthquake starts above the surface of the earth. The epicenter is directly beneath the focus.

Front 3

What are Body Waves

Back 3

P waves and S waves

Front 4

What are P waves?

Back 4

P waves goes through solid rock and earth forms
Reach seismic stations faster then S waves

Front 5

What are S Waves?

Back 5

Only goes through solid forms

Front 6

What are surface waves? (Not S-Wave)

Back 6

Surface waves are Q&R Waves and travel slower then Body Waves

Front 7

How to read the seismograph?
Which wave is recorded first?

Back 7

Seismograph can be read by looking at the start of one wave and the start of another wave
Measure Time
EX: P wave start - S wave start
= Time of the P wave
P waves are first recorded on your seismograph because they are the fastest types of waves.

Hint 7

The S waves will be recorded second and they are usually bigger then the P waves.
If there is no S waves that means that the earthquake occurred on a different side of the planet and since S waves can’t travel through the liquid layers of the earth they never make it to the seismograph.

Front 8

How to locate an epicenter on a map?

Back 8

1. scale the map
2. Figure out how long the epicenter is on your map using the scale
3. Take a compass and draw circles using the measurements you obtained and where the 3 circles cross is where the epicenter is.

Front 9

What are the five characteristics of a mineral?

Back 9

1. Solid
2. Inorganic
3. Naturally Occurring
4. Definite Chemical Composition
5. Definite Crystalline Structure

Front 10

How to test the streak of the minerals?

Back 10

Streak Test
-you determine the streak by the color it leaves behind when you test it.
No color = No streak