Communication systems

Communication systems

8th - 9th Grade

8 Qs

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Communication systems

Communication systems

Assessment

Quiz

Other Sciences

8th - 9th Grade

Medium

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A hearing aid is a small device that contains an amplifier, a battery, a microphone, and a speaker. Which part of a hearing aid functions to detect sounds in the user’s environment?

the battery

the amplifier

the speaker

the microphone

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

The picture shows a television satellite dish. The satellite dish is an example of which of the following components of a television communications system?

decoder

encoder

receiver

transmitter

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following BEST describes the function of an encoder in a telephone communication system?

It receives transmitted electrical signals.

It sends electrical signals through a circuit.

It converts sound to electrical impulses.

It changes electrical impulses into sound.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following identifies the primary function of a radio station tower in a communication system?

transmitter

encoder

decoder

receiver

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Sherry is going to use her computer to draw a three-dimensional box. She wants to be able to specify the exact dimensions and angles and to rotate the box as needed on the screen. Which of the following types of programs would Sherry most likely use for this purpose?

math spreadsheet program

internet based search engine

word processing software

computer aided design program

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following devices would MOST LIKELY be used to convert a drawing on paper into an electronic format that could be viewed on a computer screen?

scanner

internet modem

network router

printer

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A movie studio will use two methods of communication, television and the Internet, to advertise a new movie. Which of the following MUST both methods of communication use in order to show the advertisements to viewers around the world?

printing to create the images

software to search for images

networks to transmit signals

systems to locate viewers

8.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The international symbol for "No Entry" is a picture of a minus sign (-). Which of the following is the MOST important reason why this symbol is used on roads throughout Europe?

Symbols take up less space on a sign than words

European countries have many different languages

One factory can make signs used by many European countries.

Small children can understand symbols better than words