Tsunamis
Detect/Forecast, Warn/Communicate, and Reduce Damage
Criteria and Constraints
Evaluating Solutions
100

Which magnitude earthquake is more likely to cause a tsunami, 4 or 7?

7

100

Which of the three hazard protection subsystems does doppler weather radar belong to?

Detect/Forecast

100

What is a criterion?

Something a solution should or must do.

100

Timothy has a problem. When he makes peanutbutter and jelly sandwiches, he always ends up with peanutbutter on his fingers and jelly on his thumbs. Two friends made different suggestions. Friend one says to make the sandwich with the peanutbutter and jelly on the inside. The other friend says to not use peanut buttter or jelly.

Which solution do you think is better. Why?

Depends on arguments.

200

What 3 things happen to tsunamis waves after they reach land? 

They collapse (get smaller), lose energy, and return (reflect) back to the ocean.

200

Which of these technologies is for reducing damage?

- Storm Shelter

-Sirens

-Phone alerts

Storm Shelter

200

State for each of these whether it is a criterion or a constraint.

a -Cannot take too much space

b -Must use steel in the final product

b = criterion

a = constraint

200

Offer a solution to the following problem. The class votes on who is most convincing (do not make it a popularity contest).

When leaving his house, James often forgets one or more items he usually needs. These items include keys, wallet, phone, water bottle, and other small items depending on the day.

Depends on argument.

300

What is the speed range for tsunamis on open water? Answer in kilometers per hour.

Closest to the actual range gets the points.

600-900km/hr

300

Would a system with these technologies have something for each of the three hazard protection system subsystems? If yes, which subsystem would each technology be a part of? If no, which subsystem(s) is(are) missing?

a - Phone alerts

b - Educational posters

c - Fire hydrants

It would not. None of these technologies 

300

A company's employees have complained about wages. The company now has a problem. They do not want to spend too much money on their employees and lose profit, but they also do not want to lose employees.

Come up with 2 criteria and 2 constraints for this problem.

Depends on argument

300

A company has been told by its employees that they are unsatisfied with their wages. Employees are asking for more money, or they will leave. Two solutions have been offered by the company. Which should the company choose? Why?

a - Give the employees biannual (twice yearly) raises to keep up with inflation.

b - Give the employees a cash bonus right now to save the company money over time.

Depends on argument

400

List 3 attributes of an earthquake most likely to cause tsunamis, which direction(s) the tsunami travels from the earthquake, and 3 changes to the waves as they approach shore.

EQ: Colliding boundary, shallow (<50km deep), high magnitude (6.0+)

All Directions

Approaching Shore: Slow down (lose energy), get close together, get tall (increase in size)

400

Give an idea for a technology that could be used to reduce damage to property from earthquakes. 

Defend your idea with 3 reasons it should be used.

Best DEFENSE wins.

Best defense for an idea.

400

A police officer notices a more wrecks at a specific intersection in the city. Traffic gets really backed up at this intersection, causing people to become impatient. This creates abnormally high numbers of collisions.

Which of these would be the primary criterion for a solution to this problem? Sort the rest into criteria and constraints.

a - Cannot go past city's budget

b - Must make traffic flow faster

c - Must reduce the number of collisions

d - Cannot take more than 2 months to implement

c = Primary Criterion

b = Criteria

a,d = Constraints

400

A city road has been broken due to being a high traffic area. The road has potholes, cracks, and sides are even breaking off in some parts. The city council has listed 3 possible options. Choose the best. Defend your argument.

a - Create new roads that go to the same places. This option is the best for efficiency, worst for cost, worst for time.

b- Repave/repair the old road. This option is the worst for efficiency, best for cost, and best for time.

c- Recreate the road with a more durable substance to prevent wear and tear. This option is the middle for efficiency, middle for cost, and middle for time.

 

Depends on argument.