What Engineers Do
Our Rockets!
The Engineering Process
Newton's Laws
Odds & Ends
100
State Newton's 2nd Law of Motion for determining velocity (speed).
Velocity = Force divided by Mass
100
What adds thrust to our rocket?
compressed air [or the air pump]
100
Which step were students doing when they built spool toys?
Construct a Prototype
100
State any 2 of Newton's Laws of Motion
1. An object at rest remains at rest; an object in motion remains in motion; unless acted on by an unbalanced force. 2. Force = Mass X Acceleration 3. For every action there is an equal and opposite reaction.
100
What was the name of the first artificial satellite sent into orbit by the USA?
Explorer 1
200
Because some test flights went down in the ocean, Kristopher developed a new material he thinks would be good for life-jackets. Name 2 properties of a fabric that would need to be tested before it is used as material in a life jacket.
Any 2 or others: durability; buoyancy; strength
200
What part of the rocket reduces air resistance?
the nose cone
200
When an engineer determined, "We need better materials for a life-jacket", he or she were:
Identifying a Need
200
Which Law explains that after a rocket reaches escape velocity, it needs no more fuel to travel through space?
1
200
What kind of satellite flies only a few Km from the ground, usually in a polar orbit to take close pictures of specific locations?
LEO (Low Earth Orbit)
300
3. Circle the statement below that is true concerning the design process? A. Deadlines are not necessary in the design process. B. All of the initial ideas are carried out in the design process. C. Modifications are often made after the initial design is made. D. Experts are rarely consulted about the design of a process.
C
300
What increases drag with the rocket?
its weight or air resistance
300
An astronaut took a prototype space suit into a "zero G chamber" and expressed how it worked.
Test and Evaluate
300
!!!DAILY DOUBLE!!! An astronaut named Haley is making a space walk. Her her mass and the mass of her gear have a mass of 80 kg. She is moving with a force of 800 Newtons (N). How fast will she travel?
10 meters/second (m/sec)
300
Name a device that converts Electricity into heat, wind and thermal energy.
a hair dryer
400
A step in the design process in which engineers make a list of possible solutions for problem and discuss the pros and cons of each would be best described as:
brainstorming
400
What energy transformation occurs when the rocket takes off?
Elastic Potential Energy (in the compressed air) --> Mechanical energy
400
Mr. Umfress wrote your ideas on the board.
Develop Possible Solutions
400
A micro meteor traveling 60,000 kph relative to Captain Majors hit his space suit. The meteor had a mass of .040 km. With what force did the micro meteor strike?
2400 N (all in one tiny spot...20 X the speed of a bullet)
400
Krystal dropped objects from a height of 12 meters into soft sand to find out if weight affects the speed at which objects fall. She found that a golf ball, a spoon, and a coin landed in less time than a feather, a paper plate, and a maple leaf. Krystal concluded that light objects fall more slowly than heavy objects. Why is his conclusion probably NOT correct?
Factors other than weight affect the speed at which objects fall through the air. [Shape; air resistance]
500
An aerospace company wants to build a rocket manufacturing plant near a desert ecosystem. Their plant will release a volume of water ten times greater than the rainfall naturally received by the ecosystem. The company has concluded that their plant would benefit the ecosystem simply by releasing the water. . .. Why is their conclusion probably not correct?
Organisms in the desert have adapted to the natural rainfall and moisture levels.
500
What 3 factors cause flight?
Lift; Thrust; Drag
500
The rocket leaked when subjected to extremely low air pressure (a vacuum), so the engineers planned a new one, based on when they had learned.
Redesign
500
Your friend tossed a concrete block to you. It had a force of 42 N and was traveling at 7 m/Sec. What was the block's mass in Kg?
6 Kg
500
What cool, longshore current gives California a temperate climate?
The California current
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