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Tech B Final

Total questions: 28

Worksheet time: 42mins

Name
Class
Date
1.

An improvement of an existing technology is called

a)

engineering

b)

innovation

2.

The creation of new technology is

a)

invention

b)

innovation

3.

Planes, ships, trains & automobiles are what type of technology?

a)

transportation

b)

communication

4.

Buildings, towers, bridges, roads, and tunnels are part of what technology?

a)

construction

b)

transportation

5.

Social media, email, phones, and computers are what type of technology?

a)

medical

b)

communication

6.

Which force of flight is this?

a)

Thrust

b)

gravity

7.

This force of flight is

a)

lift

b)

drag

8.

Which force of flight is this?

a)

gravity

b)

lift

9.

This force of flight is

a)

gravity

b)

lift

10.

Which force of flight is the opposite of thrust?

a)

drag

b)

lift

11.

What makes a hot air balloon float?

a)

hot air is less dense than coolair

b)

hydrogen gas

12.

What changes electricity into mechanical energy?

a)

an electric motor

b)

a generator

13.

What is the spinning part of an electric motor?

a)

magnet

b)

commutator

14.

What force causes an electric motor to spin?

a)

magnetism

b)

gravity

15.

The plastic coating on the outside of a wire is a good conductor of electricity.

a)

true

b)

false

16.

What is this mechanism?

a)

crown & pinion

b)

simple gear train

17.

What is this mechanism?

a)

universal joint

b)

simple gear train

18.

What mechanism is this?

a)

universal joint

b)

bevel/miter gear

19.

What is this mechanism?

a)

crown & pinion

b)

worm gear

20.

What is this mechanism?

a)

worm gear

b)

cam & follower

21.

What is the gear ratio in this diagram?

a)

1:16

b)

1:1

22.

What is the gear ratio in this diagram?

a)

2:1

b)

8:1

23.

The first gear is turning clockwise. What direction will the last gear be turning?

a)

counter-clockwise

b)

clockwise

24.

When the driving (input) gear is larger than the driven (output) gear, which one will turn faster?

a)

driving (input) gear

b)

driven (output) gear

25.

In a simple gear train, which gear turns the fastest?

a)

large gear

b)

small gear

26.

You can simplify a code using custom "Define" blocks

a)

true

b)

false

27.

What do we call the part of the robot that contains all the ports to connect motors & sensors, processes our code & makes the robot work?

a)

sensor

b)

Brain

28.

This is a

a)

keps nut

b)

screw