Chapter 4

Question 1

3 types of stress

Answer 1

Tension(pull airhead)
Compression(clay)
Shearing

Question 2

Tension

Answer 2

Stress force that pulls on the crust and thins the middle of the rock

Question 3

Shearing

Answer 3

Stress pushes mass of rock in two opposite directions

Question 4

The stress force that SQUEEZES rock until it folds or breaks

Answer 4

Compression

Question 5

Fault

Answer 5

Break in rock of earths crust where rock surfaces slip past eachother

Question 6

Where do faults mostly occur?

Answer 6

At plate boundaries

Question 7

What happens when lots of stress builds up in a rock?

Answer 7

Fault

Question 8

Normal fault

Answer 8

Fault cuts through rock at an angle so footwall sits over the Fault and hanging walls sinks down( and hangs below)

Question 9

Reverse fault

Answer 9

Footwall sinks down below fault while hanging wall stays above fault

Question 10

Strike-slip fault

Answer 10

Rocks on either side of the fault SLIP past each other sideways

Question 11

What kinds of stress are the 3 faults caused by?

Answer 11

Reverse- compression
Normal-tension
Strike slip-shearing

Question 12

Anticline

Answer 12

A fold in rock that bends upward into an Arch

Question 13

SYNCline

Answer 13

A fold in rock that bends downward (or SYNCS into the ground)

Question 14

Compression and folding of the crust is caused by?

Answer 14

The collision of two plates

Question 15

A force that acts on rock to change it in shape or volume

Answer 15

Stress

Question 16

How does shearing occur?

Answer 16

Where two plates slip past each other

Question 17

How does tension occur?

Answer 17

Where two plates pull apart

Question 18

How does compression occur?

Answer 18

When two plates come together

Question 19

What happens when stress increases?

Answer 19

Force increases