Technology and Engineering CFA #2



Technology and Engineering CFA #2

Student Name: __________ Date: _________

1) An engineer constructs a model of a new dam that is to be built above the Danube River. He uses the same type of cement that will be used on the real dam. The dam design is called Arch-22. He tests the miniature cement dam using a pressurized water tank.

Which predictions could NOT be made from using a model such as this?

A) The Arch-22 design may have weaknesses around the base.

B) A coating may need to be added to the concrete, as water weakens it.

C) The Danube River may rise above the level of the dam during Spring.

D) The Arch-22 dam needs to be sloped at 39 degrees, to give maximum strength.

2) Sally and Juan’s science teacher challenged her students to build a paper airplane that would stay airborne for ninety seconds. The students have two days to design and test their planes. The assignment will end with a “fly-off”. First Sally and Juan researched plane designs. Then Sally and Juan built their first plane. Whenever they tested the plane, it would take a nose dive straight into the floor. They changed the design by reshaping the nose of the plane and adding some weight to the tail. The plane flew, but did not get very far. Finally they tried to change the way they threw the plane. After many tries, their

plane stayed in the air an average of ninety-two seconds.

What is the next step in the technological design process?

A) designing a product

B) identifying a problem

C) evaluating/ Analyzing the design

D) implementing the design

3) Design a device that will knock a block of wood a distance of 5 meters.

That was the challenge in science class. Ben and Sam designed a pendulum to move the wood block. Their first design moved the block about 1.5 meters. They rebuilt their pendulum and changed the mass of the pendulum bob. After they made several changes in the mass of the bob, they finally knocked the wooden block 7.0 meters.

Each time Ben and Sam tried a new mass for the pendulum bob they were

A) designing a product.

B) identifying a problem.

C) evaluating the design.

D) improving/modifying the design.

4) Design a device that will knock a block of wood a distance of 5 meters.

This was the challenge in science class. Ben and Sam designed a pendulum to move the wood block. Their first design moved the block about 1.5 meters. They rebuilt their pendulum and changed the mass of the pendulum bob. After the changes, the boys knocked the block of wood 4 meters, 6 meters, and finally 8 meters. The average distance the block moved after the final

changes to the pendulum was 6 meters. The boys won the design challenge.

What part of the engineering design process were the boys doing when they rebuild the pendulum bob?

A) creating

B) evaluating

C) identifying the problem

D) Improve/modify the prototype

5) To build an apartment, an engineer has to analyze a lot of data and do many complex calculations. How can the engineer speed up the process and also ensure that all the calculations are accurate?

A) Do the calculations by hand so that they are accurate.

B) Use computer software programmed to do all the calculations.

C) Get a large team of people to manually do all the calculations and analysis.

D) Do only the simpler calculations and make reasonable estimates for the rest.

6) Which of the following would be most important in designing a new drug to treat headaches?

A) low cost of pill

B) making sure the drug does not have any harmful side effects

C) size of pill

D) making sure the drug does not taste bad

7) A team of engineers has designed a new anti-collision device for cars. The device is intended to reduce the chance of collisions between cars. The engineers have decided to test the device on model cars in laboratory conditions before testing it on real cars.

Which test would be MOST useful to decide if the device works as intended?

A) Comparing the frequency of collisions with and without the device

B) Measuring the amount of damage after a collision, with the device fitted

C) Observing how the number of collisions varies with the speed of the cars

D) Comparing the performance of the device with that of other similar devices

8) Roseanne and Jackie were asked to design and create a paper airplane that would stay in the air for as long as possible. They began by folding printer paper into four different planes. They then test the flying time of the planes by throwing them and timing their flights with a stopwatch. They compared results to select the plane to use in the competition.

According to the teacher's criteria, what data did Roseanne and Jackie MOST LIKELY use to select their best airplane?

A) how far their plane went

B) the planes' time in the air

C) the plane with the lowest weight

D) the plane with the widest wing-span

9) Meteorologists want to design a system of instruments that will evaluate ocean currents, air temperatures, and wind speed in order to predict catastrophic weather such as hurricanes and cyclones. Before building a working system of the weather instruments, the scientists have built a prototype.

The next step in deciding if their design is successful would be to

A) modify their design.

B) collect data using a prototype.

C) evaluate the result of their system.

D) draw conclusions from the use of the prototype.

10) Sandy is building a small toy car. He wants to use a balloon to power the toy car. He fills a balloon with air and then attaches a straw to the balloon. He tapes the balloon-straw combination to the car and then releases the end of the balloon. The toy moves forward as the air from the balloon comes out the back of the straw. What can Sandy do to make the toy car move faster?

A) Use less air in the balloon.

B) Use a larger balloon.

C) Use a longer straw.

D) Use larger tires.

11) Many of the technological advances over the last 50 - 75 years have been in the area of weaponry and warfare, such as atomic/nuclear weapons, radar, biological weapons, etc. These advances have both positive and negative aspects. Which statement describes a negative aspect of these advances?

A) The advances in body armor protect individuals and prevent deaths that previously could not be prevented.

B) Advances in communication and transportation have made it easier to prevent attacks and rescue those who need be rescued.

C) Advances in satellite imagery have made desired targets easy to hit with little destruction of innocent life and property.

D) The lingering radiation after detonation of atomic weapons destroys the land and continues to harm people and animals long after the blast.

12) There are many environmental benefits to using nuclear power. One is not an environmental benefit of nuclear power. That is:

A) nuclear power is a highly efficient form of energy production.

B) it's not a fossil fuel, therefore it is not depleting a non-renewable resource.

C) if there is a reactor accident, the land will be uninhabitable for a long time.

D) unlike energy sources relying on fossil fuels, nuclear power results in little pollution.

13) Why are more and more people concerned about the increased use of fossil fuels, like gasoline used in cars?

A) Fossil fuels may one day run out.

B) Cars that run on gasoline are very expensive.

C) Gasoline provides very little amounts of energy.

D) Fossil fuels are all found deep within the Earth’s crust.

14) Integrated Pest Management is an effective and environmentally sensitive approach to pest management that relies on a combination of common-sense practices. The life cycles of pests and their interaction with the environment in combination with available pest control methods, is used to manage pest damage by the most economical means, and with the least possible hazard to people, property, and the environment. Integrated Pest Management deals with the prevention and suppression of harmful organisms and long-term effects on the environment. Good agricultural practices in plant protection include weed control. Why is weed control important to agriculture production?

A) weeds compete with crops for moisture

B) weeds compete with crops for nutrients

C) weeds compete with plants for sunlight

D) weeds compete with plants and crops for nutrients, moisture, and sunlight

15) New technology has allowed us to genetically modify our food. Scientist can now create crops that are pest resistant, drought resistant, faster growing and more nutritious. These consequences would best be describes as

A) positive, intended consequences.

B) negative, intended consequences.

C) positive, unintended consequences.

D) negative, unintended consequences.

16) The U.S. Army is giving soldiers who have lost limbs a higher quality of life, including allowing some to remain on active duty or to return to combat if they choose. Service men and women who have lost limbs are jumping out of airplanes or commanding troops in combat. This is possible because of the work orthopedic surgeons have done in conjunction with science technology, specifically in the fields of prosthetics and

A) robotics.

B) stem cells.

C) small machines.

D) computer animation.

17. Which is the best example of an assistive bioengineered product?

A. A rose bush that is bred to have roses of a particular color

B. A computer program that helps a paralyzed person to control a wheelchair

C. A pesticide produced from the compounds of a plant.

D. A bacterium that generates oil by products in the presence of sunlight

18. Which of the following is the best example of an adaptive bioengineered product?

A. wheelchair

B. artificial heart

C. hearing aid

D. crutches

19. Which of the following is an example of an adaptive bioengineered product?

A. a cast

B. eye glasses

C. genetically altered corn

D. wrist and

20. Which of the following is the best example of an assistive bioengineered product?

A. antibiotics

B. lung transplant

C. rosebushes bred to be a certain color

D. laser eye surgery.

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