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STEM 7 - Unit 1 Review

Total questions: 20

Worksheet time: 40mins

Name
Class
Date
1.

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

a)

Gear

b)

Battery

c)

Spring

d)

Pendulum

2.

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

a)

Linear

b)

Rotary

c)

Oscillatory

d)

Translational

3.

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

a)

Network

b)

System

c)

Application

d)

Device

4.

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

a)

True

b)

False

c)

Sometimes

d)

Only in certain contexts

5.

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

a)

Outputs

b)

Processes

c)

Inputs

d)

Materials

6.

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

a)

Device

b)

Machine

c)

System

d)

Appliance

7.

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

a)

open-loop system

b)

closed-loop system

c)

semi-closed system

d)

feedback system

8.

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

a)

Battery

b)

Spring

c)

Magnet

d)

Gear

9.

A moveable book is another term for an interactive book.

a)

True

b)

False

c)

Sometimes

d)

Rarely

10.

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

a)

Circular

b)

Rotational

c)

Linear

d)

Oscillatory

11.

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

a)

Pulley

b)

Lever

c)

Inclined Plane

d)

Wedge

12.

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

a)

Control

b)

Lever

c)

Brake

d)

Gear

13.

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

a)

Input

b)

Feedback

c)

Output

d)

Control

14.

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

a)

Pulley

b)

Lever

c)

Inclined Plane

d)

Wheel

15.

Mechanisms often include combinations of various mechanical components working together.

a)

True

b)

False

c)

Sometimes

d)

Rarely

16.

A system that is part of another larger system. Smaller systems that exist within larger systems.

a)

Components

b)

Subsystems

c)

Modules

d)

Elements

17.

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)

Compromise

c)

Substitution

d)

Adjustment

18.

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

a)

True

b)

False

c)

Sometimes

d)

Rarely

19.

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

a)

Compromise

b)

Trade-off

c)

Sacrifice

d)

Adjustment

20.

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

a)

Control

b)

Sensor

c)

Battery

d)

Motor