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STEM 7 - Unit 1 Review

Total questions: 23

Worksheet time: 46mins

Name
Class
Date
1.

A computer, with its various components working together to process data, is an example of a ___________.

a)

System

b)

Network

c)

Database

2.

In a quality control system, a sensor helps provide data needed to adjust the system’s ___________.

a)

Feedback

b)

Temperature

c)

Pressure

3.

A company decides to use a less expensive material while sacrificing some product durability. This is an example of a ___________ to cut costs.

a)

Trade-off

b)

Investment

c)

Enhancement

4.

In a remote-controlled car, the joystick acts as a ___________ because it directs the movement of the car.

a)

Control

b)

Battery

c)

Antenna

5.

In a clock, the ___________ is responsible for storing the energy needed to drive the hands of the clock forward.

a)

Spring

b)

Battery

c)

Gear

6.

The wheels of a toy car move in a ___________ motion when it drives straight forward.

a)

Linear

b)

Circular

c)

Zigzag

7.

A seesaw in a playground works with the help of a ___________ to balance and pivot the board.

a)

Lever

b)

Pulley

c)

Spring

8.

A mechanism can consist of multiple mechanical components working together.

a)

True

b)

False

9.

A moveable book is another term for an interactive book.

a)

True

b)

False

10.

Parallel movement involves multiple parts working in tandem to move a single element in an interactive book.

a)

True

b)

False

11.

A washing machine, which consists of multiple parts working together to clean clothes, can be classified as a ___________.

a)

System

b)

Appliance

c)

Machine

12.

In an automated factory, cameras collect data that assist in regulating the ___________ of the production line.

a)

Inputs

b)

Outputs

c)

Speed

13.

When a manufacturer switches to a cheaper material while accepting a slight decrease in quality, they are making a ___________ to reduce expenses.

a)

Trade-off

b)

Compromise

c)

Sacrifice

14.

The handle of a bicycle that directs its direction functions as a ___________ within the bike's design.

a)

Control

b)

Seat

c)

Wheel

15.

A wind-up toy relies on a ___________ to store energy and power its movement.

a)

Spring

b)

Battery

c)

Gear

16.

A piston in an engine moves in a ___________ motion to produce power.

a)

Rotary

b)

Oscillating

c)

Reciprocating

17.

A crowbar utilizes a __________ to provide a pivot point, allowing the user to lift heavy objects more easily.

a)

Pulley

b)

Lever

c)

Screw

18.

Mechanisms often include combinations of various mechanical components working together.

a)

True

b)

False

19.

An interactive book can also be referred to as a moveable book.

a)

True

b)

False

20.

Parallel movement refers to two or more parts moving together to control the same object in an interactive book.

a)

True

b)

False

21.
1.  A system that is part of another larger system. Smaller systems that exist within larger systems.
a)
Subsystems
b)
Mega system
c)
Main system
22.

When a system has no way to measure or control its product, the system is called an ............

a)

subsystem

b)

open-loop system

c)

closed-loop system

23.

A system that has a way of automatically controlling or measuring its output, is called a(n) .....

a)

subsystem

b)

open-loop system

c)

closed-loop system