WorksheetsEOC Review 13
Total questions: 52
Worksheet time: 52mins
When using power tools in the lab, what protective item must be worn to protect your eyes?
Goggles
Safety mask
Googles
Gloves
Why is the dragster's "balance point" important?
Reduce surface friction (force)
The car will flip going down the track if it is not balanced.
Engineering Tradeoff
Surface Friction
Why would homeowners, companies, and businesses construct wind turbines on their property?
Homeowners can sell this power back to the grid. Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
gravitation pull on the mass : Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
greater than the force of weight : Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
none of these
What does Newton's 2nd Law tell us about acceleration?
The faster the car accelerates, the greater the speed. An increase in force will increase acceleration. Acceleration will also increase by decreasing mass.
Reduce Drag (force):Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
The force of lift must be greater than the force of weight for the airplane to rise. Likewise, thrust force must be greater than drag force to keep the aircraft moving forward.
I have no clue
When making adjustments to any power tool, what is the FIRST thing you do assuming the machine is off?
Unplug the network cable
Unplug the power cord
Remove the cable
Do nothing
When engineers improve existing technologies or solve technological problems, which of the following is the end goal?
Engineering and Technologies
Invention and Invention
Invention and Innovation
None of the above
How do you increase the lift efficiency ratio and flight times? (list 2 ways)
account the gravitation pull on the mass (mass x gravity).
greater than drag force to keep the aircraft moving forward.
Increase wing plantar area and/or decrease glider weight
Reduce Drag (force):gravitation: motion
How do the four forces of flight (thrust, lift, weight, drag) affect one another? (use all four forces in your answer)
Increase wing plantar area and/or decrease glider weight
Mass is a measure of the amount of matter or material an object contains (density x volume). Weight takes into account the gravitation pull on the mass (mass x gravity).
The force of lift must be greater than the force of weight for the airplane to rise. Likewise, thrust force must be greater than drag force to keep the aircraft moving forward.
Both A and B
What are the three ways to increase acceleration according to Newton's Second Law of Motion?
Reduce Drag (force) Reduce surface friction (force) Reduce mass
the mass (mass x gravity).
Reduce surface friction (force)
ALL OF THE ABOVE
What are 2 ways you can increase power capacity (watts) of a battery?
Both increase: and decrease
Both parts increase: and decrease
Power capacity (W) of a battery increases if voltage capacity increase or ampera
Increase watts only
How are mass and weight different?
Mass is a measure of the amount of matter or material an object contains (density x volume). Weight takes into account the gravitation pull on the mass (mass x gravity).
Reduce mass:Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
The car will flip going down the track if it is not balanced.:Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
Engineering Tradeoff:Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
Power is a type of ELECTRICAL power output. In the equation P=V x I, Power (P) is measured in _________, Volts (V) are measured in _________, and Current (I) is measured in __________.
Power, Amps, Torque
Amps, Torque, Power
Watts, Volts, Amps
All are correct
What is it called when you improve thing on your glider while having a negative effect on one or more other things.
power back
Engineering Tradeoff
surface friction
balance point
What is the most important aspect (feature) of any construction project AND why?
Safety is the most important aspect of any construction project so that people do not get hurt or lose their lives.
There is no aspect: Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
Safety is not important:Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
None of the above
What is an advantage of having an electric vehicle?
They use jet fuel
They are supercharged
In other words, they are less polluting.
They run like superheros
Explain how Automation works.
Sensors are electrical devices that can measure environmental conditions (heat, light, obstacles) and convert them to an electrical output.
When a machine controls a machine, it is called automation. We give the computer commands that we want to execute, the order we want the commands executed, and decisions to be made while executing.
Tension pulls while compression pushes together.
The more people a structure carries, the bigger the Factor of Safety needs to be.
How do you determine when a truss will fail?
BOTH PARTS: Therefore, if stress devided by yield is greater than 1, the member will fail.
compression pushes together :Therefore, if stress devided by yield is greater than 1, the member will fail.
If stress is greater than yield, the member will fail. Therefore, if stress devided by yield is greater than 1, the member will fail.
None of the above
What determines the Factor of Safety on a structure?
The more people a structure carries, the bigger the Factor of Safety needs to be.
Stress is greater: Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
There is no advantage:Some large companies install utility scale wind turbines at their plants to offset the energy they need to run machinery.
Option A and B
What is the difference between tension and compression?
Tension pushes while compression pulls
Tension pulls while compression pushes together.
Tension pulls while compression pulls together
They are equal
How does Photovoltaic technology work?
panels capture the sun's rays and convert it into electrical power.
of a battery increases if voltage capacity
sustainable technologies
they take the suns rays and suntan in bora bora
The input devices for robots are called sensors. What do the sensors (input devices) do?
Sensors are electrical devices that can measure environmental conditions (heat, light, obstacles) and convert them to an electrical output.
Motors, lights, radio, toaster: Therefore, if stress devided by yield is greater than 1, the member will fail.
When a machine controls a machine, it is called automation
voltage of the power source is greater than the voltage of an output device, it is likely that the output device will overheat
Why does the voltage of a power source matter AND what can you use if you want to lower the voltage?
If the voltage of the power source is greater than the voltage of an output device, it is likely that the output device will overheat - potentially destroying the device or even causing a fire. In many cases, a resistor can be used to drop the voltage. As implied by its name, a resistor resists the flow of electricity. This drops the voltage passing through the output device to an acceptable level.
devices convert electrical energy into mechanical, light, heat, or sound energy. Any device that is powered by electricity can be used as an output device. List examples of output devices.
Sensors are electrical devices that can measure environmental conditions (heat, light, obstacles) and convert them to an electrical output
Answers A, B and C are correct
What does drag always oppose?
Drag always opposes forward motion.
Drag always opposes upward motion.
Drag always opposes itself All is correct.
Drag is equal to drag
What does the thrust of a rocket have to do with Newton's Third Law of Motion?
The first form of a rocket came from the Greeks and was developed by Archytas as a steam powered wooden pigeon that would "fly".
On a rocket, lift is a side force used to stabilize and control the direction of flight. On an airplane, lift is a force that overcomes weight to enable flight.
The rocket's movement off the launch pad is a reaction to an action created by the motor. In the case of a water rocket, the rocket reacts to water being forced out of the bottle by moving in the opposite direction.
Drag always opposes forward motion.
Why do body parts have to be biocompatible? What happens if they aren't?
Body parts need to be biocompatible so that they fit, work properly, and so they are not harmful. If they don't fit or are made from harmful materials, they won't work and your body will reject them.
Different parts of the body are used to reenergize the nerves:Therefore, if stress devided by yield is greater than 1, the member will fail.
Shark skin inspired swim suits :Therefore, if stress devided by yield is greater than 1, the member will fail.
the rocket reacts to water being forced out :Therefore, if stress devided by yield is greater than 1, the member will fail.
Output devices convert electrical energy into mechanical, light, heat, or sound energy. Any device that is powered by electricity can be used as an output device. List examples of output devices.
Dog, Cat, Mouse
Car, motorcycle, bike
Motors, lights, radio, toaster
None of the above
Where did the first form of a rocket come from?
Russia
Greeks
China
United States
How does lift on an airplane differ from lift on a rocket?
On a rocket, lift is a side force used to stabilize and control the direction of flight. On an airplane, lift is a force that overcomes weight to enable flight.
The rocket's movement off the launch pad is a reaction to an action created by the motor. In the case of a water rocket, the rocket reacts to water being forced out of the bottle by moving in the opposite direction.
Drag always opposes forward motion: Therefore, if stress devided by yield is greater than 1, the member will fail.
They are the same for both
If we increase the height of a pendulum, we will increase the potential energy. What effect does this have on kinetic energy?
Kinetic energy will decrease the same amount.
Kinetic energy will increase the same amount.
Kinetic energy will stay the same .
Answer A only
How does targeted muscle reinnervation work?
your body will reject them.:Therefore, if stress devided by yield is greater than 1, the member will fail.
Creating nature inspired solutions to problems.:Therefore, if stress devided by yield is greater than 1, the member will fail.
Different parts of the body are used to reenergize the nerves. For example, an amputee’s chest muscles may be reenergized to help them move their arm. In this new prosthetic arm, the amputee will be able to move their arm to the left just by thinking of the action. The movement happens as a result of the thought being sent by the nerves in the chest to a microprocessor in the robotic limb.
None of the above
Where do engineers get information in order to create technology?
MA=d1/d2
creativity
ability to synthesize science, math, and technology
prototype.
Humans give off energy while sleeping. Why does human energy play a critical role when designing a survival shelter?
Most of this energy actually gets converted to heat, so this is a legitimate heat source that can be utilized to help save the lives of the survivors.
Kinetic energy will increase the same amount.:Therefore, if stress devided by yield is greater than 1, the member will fail.
Each shape has a different volume and surface area. :Therefore, if stress devided by yield is greater than 1, the member will fail.
Answer A,B, and C are correct
Why does the density of a material matter when trying to stay warm?
The speed of the transfer of heat energy depends on how tightly packed the atomic particles are in a particular material (the density of the material). Because metals have high densities, they are good conductors of heat;
wood, for example), are less dense and are not such good conductors of heat.:Therefore, if stress devided by yield is greater than 1, the member will fail.
(the density of the material:Therefore, if stress devided by yield is greater than 1, the member will fail.
ANSWER BOTH PARTS
What are the 6 types of simple machines AND what is the purpose of a simple machine?
Lever, Wheel and Axle, Pulley, Inclined Plane, Wedge, Screw The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
Lever, Wheel and Axle, Pulley, Spongebob, Wedge, Screw:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
Lever, Wheel and Axle, Pulley, Google, Wedge, Screw:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
Lever, Wheel and Axle, Pulley, Simple computers, Wedge, Screw:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
Explain why people in colder environments have shorter arms.
Longer limbs offer more surface area and lose heat more easily than shorter limbs which have less surface area and are more effective in maintaining heat.
The heat transfer continues until both sides are at the same temperature.:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
vibrating particles collide with other nearby particles and cause them to vibrate faster too. :The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
None of the above
Why does the shape of the shelter matter?
follow a curved path :The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
velocity changes with time.:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
Each shape has a different volume and surface area. The smaller the surface area, the fewer materials you need, the warmer the shelter can be.
Heat energy makes the particles vibrate faster.:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
How is R-value determined?
material resists the flow of heat through it.:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
R value is a measure of how well a piece of material resists the flow of heat through it. R-value also takes into account the material's thickness. The R-value of a material equals its thickness divided by its k value (R=L/k).
are more effective in maintaining heat.:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
moves from hot to cold:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
How does Photovoltaic technology work?
Pv panels capture the sun's rays and convert it into electrical power.
Power capacity (W) of a battery increases if voltage capacity increase or ampera :The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
Make the blades longer:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
Explain how Automation works.
When a machine controls a machine, it is called automation. We give the computer commands that we want to execute, the order we want the commands executed, and decisions to be made while executing.
The more people a structure carries, the bigger the Factor of Safety needs to be. :The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
Tension pulls while compression pushes together.:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
What are the steps to the Engineering Design Process?
Clarify design specifications and constraints. 2. Research and investigate the problem. 3. Generate alternative designs. 4. Choose and justify the optimal design. 5. Develop a prototype. 6. Redesign the solution with modifications. 7. Communicate your achievements.
Choose and justify the optimal design. 5. Develop a prototype. 6. Redesign the solution with modifications. 7. Communicate your achievements.
Research and investigate the problem. 3. Generate alternative designs. 4. Choose and justify the optimal design. 5. Develop a prototype.
None of the above
If we increase the height of a pendulum, we will increase the potential energy. What effect does this have on kinetic energy?
Kinetic energy will increase the same amount.
Most of this energy actually gets converted to heat, so this is a legitimate heat source that can be utilized to help save the lives of the survivors.
Each shape has a different volume and surface area. The smaller the surface area, the fewer materials you need, the warmer the shelter can be.
What is a powertrain AND why is it important?
A powertrain is the system of simple machines that takes the input energy and puts it to use. This includes a team of components such as levers, gears, shafts, axles and wheels. The powertrain is what makes the car go.
Calculate the ration of the distance :The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
The purpose is to increase the amount of effort :The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
None of the above
How do you determine when a truss will fail?
The more people a structure carries, the bigger the Factor of Safety needs to be.:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
If stress is greater than yield, the member will fail. Therefore, if stress devided by yield is greater than 1, the member will fail.
Sensors are electrical devices that can measure environmental conditions (heat, light, obstacles) and convert them to an electrical output. :The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
How does conduction happen?
moves from hot to cold From stove to pot to water
From pot to stove to water:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
From pot to water to stove:The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
All of the above
How does targeted muscle reinnervation work?
Shark skin inspired swim suits, Velcro inspired by burns, paint texture inspired by lotus flower
Body parts need to be biocompatible so that they fit, work properly, and so they are not harmful. If they don't fit or are made from harmful materials, they won't work and your body will reject them.
Different parts of the body are used to reenergize the nerves. For example, an amputee’s chest muscles may be reenergized to help them move their arm. In this new prosthetic arm, the amputee will be able to move their arm to the left just by thinking of the action. The movement happens as a result of the thought being sent by the nerves in the chest to a microprocessor in the robotic limb.
Explain the study of biomimicry. Give examples in your answer.
Body parts need to be biocompatible so that they fit, work properly, and so they are not harmful. If they don't fit or are made from harmful materials, they won't work and your body will reject them.
Creating nature inspired solutions to problems. Examples: Shark skin inspired swim suits, Velcro inspired by burns, paint texture inspired by lotus flower
Different parts of the body are used to reenergize the nerves. :The purpose is to make our lives easier and make it possible to achieve more with the amount of effort we are capable of applying.
