Download Entry Task

Wednesday, January 2nd
Entry Task
1. Have you ever been in an
earthquake?
2. Have you seen damage from
an earthquake on the news?
3. What are some things that
can happen because of
earthquakes (damage-wise)
Schedule:
• Deadliest Earthquakes
Video
Objective: I can
understand the effects of
earthquakes
Homework:
• Read 7.1
Thursday and Friday
January 3-4
• Mrs. Guttormsen was out and there was a
sub
• There were no entry tasks or objectives for
these days.
• Thursday, The 7.1 RSG and Chapter 7
vocabulary were assigned—Choose a
strategy and do for all words in Chapter 7.
Entry Task
Monday, January 7th
Schedule:
Write down the entire sentence • 7.1–Types of Faults Notes
and fill in the blank with the • 7.2 RSG
correct term
Objective: I can understand
that earthquakes occur along
1. All Earthquakes occur along faults
_________.
Homework:
2. The force exerted when an
• Read 7.3
object pushes, pulls, or
presses against another
object is called ________.
3. Most faults are located
along __________
____________.
Types of Faults
Rocks Move Along Faults
• Fault:
– Fracture, or break, in Earth’s lithosphere,
where blocks of rock move past each other
• At some parts of a fault, the rock slides
slowly or constantly. At others it sticks or
locks together.
– Rock bends as stress is put on it (the force
exerted when an object presses on, pulls on,
or pushes against another object.)
Earthquake
• Earthquake
– shaking of the ground caused by the sudden
movement of large blocks of rock along a fault
– can occur when there is a sudden release of
stress in the lithosphere.
• Release of stress occurs when the rocks break
free from being stuck
• Strength of an earthquake depends on
– The amount of stress built up
– The distance the rocks move along the fault
The rocks that move
• Most faults are along tectonic plate boundaries
– Most earthquakes occur here
• The rocks that move during an earthquake are
smaller than tectonic plates
• A small percentage of earthquakes occur along
faults within plates
– Stress along a plate boundary can cause the rocks to
break and move along weak areas in the middle of
the plate.
Types of faults
• Faults are classified base on how they
move
– How they move is determined by the kind of
stress that they are under.
• More than one type of fault may be
present along the same boundary.
Normal Fault
• The block of rock above
the fault plane slides
down relative to the other
block
• Occurs when stress pulls
the rocks apart
• Earthquakes are common
near boundaries where
tectonic plates are
moving apart
– The Great Rift Valley of
Africa.
Reverse Fault
• The block of rock
above the fault plane
moves up relative to
the other block
• Occurs when stress
presses rocks
together
• Occurs near collisionzone boundaries
between plates
Strike Slip Faults
• Blocks of rock move
sideways on either
side of the fault plane.
• Occurs when stress
pushed rocks
horizontally
• Happens when plates
scrape past each
other
Tuesday, January 8th
Entry Task
Answer the following
questions full sentences,
IQIA.
1. List the 3 types of faults
and briefly explain each.
2. Describe the relationships
among the focus, epicenter
and seismic waves during an
earthquake.
3. Explain two ways
earthquake damage can be
reduced.
Schedule:
• Lab- Earthquake Safe
Structures
Objective:
• I can understand how
structures are built to
withstand most
earthquakes.
Homework:
• None 
Please have on Desk:
• 7.2 RSG
Wednesday, January
Entry Task
th
9
Schedule:
Get your building and make sure • Lab- Earthquake Safe
Structures
you sketch it down in your lab
packet
Objective:
• I can understand how
structures are built to
withstand most
earthquakes.
Homework
• 7.3 RSG
Thursday, January 10th
Entry Task
Schedule:
Lab- Earthquake Safe
Structures finish
Get your structure on your
desk, ready to test.
You may make any last Objective: I can understand how
minute changes if need structures are built to withstand
most earthquakes.
be.
Homework:
• Complete Lab Packet
• 7.3 RSG
Entry Task
Friday, January 11th
Decide if the following
statements are true. If
they are write them down
as is. If they are not,
correct them.
Schedule:
• Seismic Waves Pre-Lab
Objective: I can understand
how energy travels in waves
Homework
• Set up a graph to record
your data in. Make sure to
follow all instructions on
“how to write a lab
report” worksheet
1. The epicenter is the point
underground where rocks
first begin to move.
2. Secondary waves move
faster than primary waves.
3. Three circles, each drawn
Please Have on Desk:
around a different seismic
• Earthquake Structure lab
station, meet at the
packet
epicenter of an earthquake.
• The purpose of this experiment is
to determine which type of
earthquake wave: P (pull-andpush) or S (side-to-side) travels at
a faster rate.
If…Then…Because…
1. The P-wave (pull-and-push)
will travel at a faster rate.
2. The S-wave (side-to-side)
will travel at a faster rate.
• Manipulated: What did YOU
change?
• Responding: What changed
because YOU changed something?
• Controlled: What stayed the same
the entire lab?
•
•
•
•
•
1 spring
1 stopwatch
1 sheet of construction paper
Meter stick
Masking tape
1. Collect your materials.
2. Lay the piece of construction paper
on the floor vertically - this will be
your guide for knowing how far to
move the spring.
3. Stretch out the spring 5 meters by
having 2 people hold the ends of it.
4. Have one person pull-and-push one
end of the spring so it sends a wave
back and forth through the spring
(record how long it takes for the wave
to travel).
5. Repeat step 4 for two additional trials
and calculate the average speed of the
P-wave.
6. Lay the piece of construction paper
on the floor horizontally.
7. Stretch out the spring 5 meters by
having 2 people hold the ends of it.
8. Have one person move one end of the
spring side-to-side so it sends a wave
back and forth through the spring
(record how long it takes for the wave
to travel).
9. Repeat step 8 for two additional trials
and calculate the average speed of the
S-wave.
10. Clean up!
Type of EQ Wave
Pull and Push
(P-wave)
Side to Side
(S-wave)
Sketch of How
Spring Moves
Speed of Wave
(meters/second)
Trial
1
Trial
2
Trial
3
Average
Type of EQ Wave
Pull and Push
(P-wave)
Side to Side
(S-wave)
Sketch of How
Spring Moves
Speed of Wave
(meters/second)
Trial
1
Trial
2
Trial
3
Average