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Transcript of Science Project
Question: Earthquake Packet 1-4 on page 167 Question: Explain how liquefication occurs and how it causes damage during an earthquake. Answer: Liquefication occurs when an earthquake's violent shaking suddenly turns loose, soft soil into liquid mud. As the ground gives way, buildings sink and pull apart. Science at Home-page 167 My family and I agree that
with more weight on top
the better the structure will
be because if you have the light
books on the top, they will
just fall right off. When
the heavier books are on top,
the weight makes it harder
for them to fall off! Question: Question: What can residents do
to reduce the risk of earthquake
damage to their homes? Answer: To reduce earthquake damage,new
buildings must be made stronger and more
flexible. Older buildings must be modified
to withstand stronger quakes Question: Describe safety measures you can take
to protect yourself during an earthquake. Answer: The best way to protect yourself
is to drop, cover, and hold. This
means you should crouch beneath a sturdy table or desk and hold on to it so it doesn't
jiggle away during the shaking. Question: You are builder planning a housing development
where earthquakes are likely. What types of land
would you avoid for your development? Where would
it be safe to build? Answer: You would not want to build
on dirt because of liquefication.
It would probably be safer to build on concrete, sement, or gravel Language Arts Connection-page 172 There has been a big earthquake
in Los angeles, California with a magnitude
of 7.2. It was a pretty BIG earthquake. There has been alot of damage but not to many have died. This has happened just an hour ago. We will get back to you as soon as we get more information. 1-4 on page 171 Question: What equipment do geologists use to monitor
the movement of faults? Answer: Some equipment that geologists
use are creep meters, laser-ranging devices,
tiltmeters, and satellite monitors. What two factors do geologists consider
when determining earthquake risk for a region? Geologists can determine earthquake risk
by locating where faults are active
and where past earthquakes have occurred. Explain how satellites can be used to
collect data on earthquake faults. The satellite bounces radio waves off the ground. As
the waves echo back into space, the satellite records them.
The time it takes for the radio waves to make their round
trip provides precise measurements of the distance to the ground. The distance from the ground to the satellite changes
with every change in the ground surface. By comparing different images at different times, geologists detect small
changes in elevation.
Why can't scientists predict the exact time and place an
earthquake is going to occur? Scientists can't predict the exact time and place
an earthquake is going to occur because they don't have
all the information they need about earthquakes and
earthquakes don't go in a pattern so it's alot harder. heffr Question: Yes! I would want to renovate my house
because this is the region of the united states
most likely to experience an earthquake. What if you were a contractor who was building
a new housing development? Would you make the houses
more earthquake proof? Answer: Yes! I would make the houses more earthquake proof.
I would do this by securing brick chimneys with metal brackets,
nail plywood to the ceiling joists around the chimney, to prevent
things falling in your house fasten them to wall studs with L-shaped
brackets, bolt the house to its concrete foundation, strap the water
heater to the wall, use metal connectors to strengthen joints in the
house's frame, use plywood panels to strengthen the walls. Question: What other groups of people besides home-owners
and building contractors would be interested in earthquake
preparedness? Answer: Answer: Answer: Answer: Maybe scientists and geologists would be
interested in earthquake preparedness because
they know what kind of damage earthquakes can
cause. Maybe scientists and geologists would be interested
in earthquake preparedness because they know what
kind of damage earthquakes can cause. Chapter 5 Assesment 1-33 on pages 174-175 1. b. 13. Rock stressed by compression
2. c. 14. A plateau is a large area of flat land elevated high above
3. c. sea level. Some plateaus form when vertical faults push up a
4. d. large,flat block of rock.
5. d. 15. The Friction along the sides of the fault is high so the
6. False, Stress rocks lock together and do not move.
7. False, Folds 16. The moment magnitude scale can be used to rate
8. True earthquakes of all sizes, near or far. The Richter scale is a
9. False, Pwaves rating of the size of seismic waves as measured by a
10. True particular type of mechanical seismograph.
11. Stress affects the crust because 17.Geologists collect changes in elevation,
it is a force that acts on rock to change tilting of land surface, and ground
its shape or volume. movements.
12. Two plates move away from eachother, tension
forces create many normal faults. When two of these
normal faults form parallel to each other, a block of
rock is left lying between them. As the hanging wall of each
normal fault slips downward, the block in between moves upward.
when a block of rock lying between two normal faults slides
downward, a valley forms. 18. There will be an earthquake in your area
due to friction along a fault. Please modify your
buildings so they will be okay during the earthquake
especially your old buildings. Take care!
19. This is a reverse fault formed by compression.
20. They both can travel through rock.
S waves cannot travel through liquids but P waves can.
21. One side of the street will probably move past the other.
22. Bolt the house to it's concrete foundation. Use metal
connectors to strengthen joints in the frame. Secure brick
chimneys with light, metal brackets.
23. When an earthquakes violent shaking suddenly turns loose,
soft soil into liquid mud liquefacation occurs and buildings sink
and pull apart.
24. A change in elevation along a fault indicates stress that
has deformed the ground.
25. The first to arrive are P waves, then S waves, and then
Surface waves. secondary waves shake violently.
26. P waves expand, S waves vibrate and shake violently.
27. The record would look like a horizontal line seversl
hours after the earthquake. The seismograph record would
show additional, but smaller, up and down shaking indicating
an aftershock occurred.
28. We can conclude that the second station is farther away
from the earthquake than the first station.
29. c. 30. d. 31. d. 32. a. 33. a. By: Jaclyn Fulton