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PLTW Engineering Essentials Unit 3 Test Review

Total questions: 68

Worksheet time: 55mins

Name
Class
Date
1.

Identify the type of switch.

a)

Roller Switch

b)

Rotary Switch

c)

Slide Switch

d)

Toggle Switch

2.

PCB stands for:

a)

Product Colored Board

b)

Programming Circuit Board

c)

Printed Circuit Board

d)

Pieces Colored Board

3.

You are an employee at Home Depot. A customer walks up to you and asks what wire he should buy to make circuits on breadboards. What wire do you recommend?

a)

Gauge 30

b)

Gauge 12

c)

Gauge 22

d)

Gauge 24

4.

When making your custom jumper cables for breadboards, which wire is recommended.

a)

Solid Core Wire

b)

Stranded Wire

c)

Sheath Wire

d)

Gauge 10

5.

Assuming the circuit has the power on, what are two possibilities why the LED won't turn on?

a)

The LED polarity is wrong.

b)

The LED is burned out.

c)

The LED is on the wrong row.

d)

Positive connection is on the wrong row.

6.

What is wrong with the circuit?

a)

Power is connected wrong in the rails.

b)

LED needs to be flipped

c)

Wrong Resistor

d)

Component lead is on wrong row.

7.

Which holes are connected together in row 2?

a)

A through E

b)

F through J

c)

A through J

d)

B through F

8.

What are the (+) and (-) signs on a breadboard used to indicate?

a)

The polarity of the electrical connections

b)

The resistance levels

c)

The capacitance values

9.

What do you call the highlighted part/s?

a)

Power Source/s

b)

Positive and Negative rails

c)

Prototyping area/s

d)

Conductive strip/s

10.

What is the purpose of a breadboard?

a)

The purpose of a breadboard is to slice bread.

b)

The purpose of a breadboard is to build and test electronic circuits without soldering.

c)

The purpose of a breadboard is to play board games.

d)

The purpose of a breadboard is to store bread.

11.

One component lead is connected to A4, where else could it be connected so that the circuit remains the same.

a)
A6
b)
A14
c)
C4
d)
B5
12.
Which leg of the LED is the positive side? 
a)
The longer one
b)
The shorter one
c)
There is no positive side
d)
They are both positive, I'm positive of it. 
13.
The function of a resistor is to ____________?
a)
Speed up flow of protons
b)
Speed up flow of electrons
c)
The main function of resistor in a circuit is to control the flow of current to other components.
d)
Light up
14.
a)
b)
c)
d)
15.
a)
diode
b)
LED
c)
photo cell
d)
fuse
16.

The resistors in this diagram have a resistance of ______ ohms

a)

120

b)

220

c)

320

d)

420

17.

When a circuit is closed, the load is _____________?

a)

On

b)

Off

18.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
19.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
20.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
21.

Study the breadboard.

What, if anything, is wrong with the circuit?

a)

The wires are not properly aligned (move them one spot over)

b)

There is no power source

c)

There is too much power going to the LED (no resistance)

d)

The wires do not complete the positive/negative circuit

22.

Study the breadboard.

What, if anything, is wrong with the circuit?

a)

The wires are not properly aligned (move them one spot over)

b)

There is no power source

c)

There is too much power going to the LED (no resistance)

d)

The wires do not complete the positive/negative circuit

23.

Study the breadboard.

What, if anything, is wrong with the circuit?

a)

The wires are not properly aligned (move them one spot over)

b)

There is no power source

c)

There is too much power going to the LED (no resistance)

d)

The wires do not complete the positive/negative circuit

24.

Study the breadboard.

What, if anything, is wrong with the circuit?

a)

The wires are not properly aligned (move them one spot over)

b)

There is no power source

c)

There is too much power going to the LED (no resistance)

d)

The wires do not complete the positive/negative circuit

25.

Study the breadboard.

What, if anything, is wrong with the circuit?

a)

The wires are not properly aligned (move them one spot over)

b)

There is no power source

c)

There is too much power going to the LED (no resistance)

d)

Nothing is wrong. The LED will light up.

26.

You will need to add two wires to complete the circuit. Select the answers that would complete the circuit. (You may select multiple choices)

a)

Connect row 14 to the negative rail

b)

Connect row 14 to the positive rail

c)

Connect row 23 to the negative rail

d)

Connect row 23 to the positive rail

27.

What is the function or purpose of this item?

a)

To reduce electrical current flow

b)

Provides power

c)

Emits light when a current flows through it

d)

Changes or diverts the direction of the current

28.

These are examples of a Fossil fuel - fuels produced by deposits of ancient plants and animals. Are they renewable or nonrenewable?

a)

wind, solar, geothermal

b)

coal, oil, natural gas

c)

wind, biofuels, geothermal

d)

renewable

e)

nonrenewable

29.

What type of renewable energy turns water into steam which escapes through cracks in the Earth, forming geysers and hot springs? Is it renewable or nonrenewable?

a)
biofuels
b)
hydroelectric
c)
geothermal
d)

renewable

e)

nonrenewable

30.

Which of the following are renewable resources?

a)

coal and oil

b)

geothermal

c)

wind

d)

biomass: wood, scraps, corn stalks, animal waste, etc.

e)

solar

31.

How so we get energy from the sun?

a)

Sunlight can generate electricity straight from the sky.

b)

Solar panels use the sun to power turbines.

c)

Solar panels can convert sunlight into electrical energy.

d)

Solar panels generate their own electricity.

32.

One disadvantage to this source is that it's not effective in certain weather.

a)

Sun

b)

Coal

c)

Nuclear

d)

Biomass

33.

Advantage or Disadvantage?

Locations for wind turbines are limited because no objects can block the wind.

a)

Advantage

b)

Disadvantage

34.

Why are fossil fuels more widely used than solar energy?

a)

Solar energy is harder to find

b)

Fossil Fuels are much cheaper

c)

Fossil fuels are more abundant

d)

The sun's energy can never be harnasses

35.

Why is solar energy considered a renewable resource?

a)

You can get money back from the government if you put solar panels on your homes

b)

Solar energy is cheaper than fossil fuels

c)

The sun's energy will not run out for billions of years

d)

Solar energy can be used to recharge batteries

36.

Which of the following is a drawback to wind energy?

a)

Wind turbines can cause cancer among people who live near them

b)

Wind turbines can hurt flying animals

c)

There aren't enough suitable site in the U.S to build wind farms

d)

Wind turbines emit greenhouse gases

37.

Natural gas is a renewable resource.

a)

True

b)

False

38.

How often will the message "Hello Year 7" be displayed?

a)

All the time

b)

Once

39.

When will this piece of code start?

a)

When you shake the MicroBit

b)

When you turn on the MicroBit

c)

When you press the A button on the MicroBit

40.

When will this piece of code start?

a)

When you shake the MicroBit

b)

When you turn on the MicroBit

c)

When you press the A and B buttons on the MicroBit

41.

What will happen when you press the A button?

a)

score will go up by 1

b)

score will go down by 1

c)

Nothing will happen

42.

Which part of the MicroBit is the LED Display?

a)

1

b)

2

c)

3

d)

4

43.

What will happen on the Microbit when this code is run?

a)

When button A is pressed it will display a sun on the LED display

b)

When the light level is more than 100 it will display a sun on the LED display

c)

When the light level is exactly 100 it will not show a sun

44.

Which part of the MicroBit is the B Button?

a)

1

b)

2

c)

3

d)

4

45.

On the Microbit what is the LED display used for?

a)

Input

b)

Output

c)

Both input and output

46.

You would use light blue blocks when you need to display text or pictures to the user

a)

True

b)

False

47.

Which block would you use to replace the "?" in the code?

(click the picture to make it bigger)

a)
b)
c)
d)
48.

These blocks are known as

a)

inputs

b)

event handlers

c)

variables

49.

Can the Microbit V2 detect sound?

a)

Yes, a microphone is built right in

b)

No, microbits can't detect sound at all

c)

Yes but only with an adapter

d)

Yes but you have to download a microphone

50.

What do we use to connect shapes in a flowchart?

a)

squares

b)

circles

c)

lines

d)

arrows

51.

What shape is used for all other actions in a flowchart?

a)

squares

b)

rectangles

c)

diamonds

d)

ovals

52.

What shape is used at the beginning and end of a flowchart?

a)

A square

b)

A rectangle

c)

A diamond

d)

An Oval

53.

What shape is used to show decisions in a flowchart?

a)

A square

b)

A rectangle

c)

A diamond

d)

An oval

54.

Based on the code shown, what will happen when the MicroBit starts?

a)

It will show a heart, then an X on the LEDs

b)

It will show a heart and and X, but only when the A button is pressed

c)

Nothing will happen because the code has no way to start.

55.

Which code block would make scrolling text like this?

a)
b)
c)
d)
56.

What will this function do when called?

a)

Clears the screen after every 2 seconds

b)

Will repeatedly flash the LEDs for 2 seconds with 2 second off time

c)

Will light up the LEDs for 2 second, then turn them off for 2 seconds

d)

Will light up the LEDs for 3 seconds, then turn them off for 2 seconds

57.

Select an output?

a)
b)
c)
d)
58.

When will this code stop?

a)

When the A button is pressed

b)

It won't!

c)

When B button is pressed

d)

When you shake it

59.

What type of logic is this table showing:

a)

AND

b)

OR

c)

NOT

d)

NOR

60.

What type of logic is this table showing:

a)

AND

b)

OR

c)

NOR

d)

XOR

61.

What type of logic is this table showing:

a)

AND

b)

OR

c)

NOT

d)

XOR

62.

What type of logic is this table showing:

a)

AND

b)

OR

c)

NOR

d)

XOR

63.

"I will take my umbrella only if it is both about to rain and I can find it"

This is an example of which type of logic?

a)

AND

b)

OR

c)

NOT

d)

NOR

64.

"I like pancakes with either Jam or cream cheese but not both!"

This is an example of which type of logic?

a)

AND

b)

OR

c)

XOR

d)

NOR

65.

"The burglar alarm will go off if either the door or the window or both are opened". This is an example of which type of Logic?

a)

AND

b)

OR

c)

NOT

d)

NOR

66.

What is the truth table for an AND gate?

a)

b)

c)

d)

67.

What is the truth table for an NOT gate?

a)

b)

c)

d)

68.

What is the truth table for an OR gate?

a)

b)

c)

d)

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