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Worksheets

grade 4 , con 3 , lesson 4

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

All of the following are forms of codes, except

a)

thumb up and down hands.

b)

faces expressions.

c)

writing.

d)

swimming.

2.

When your eyes see a red traffic light, this means that you have to

a)

increase your speed.

b)

cross the street.

c)

keep your speed as it is.

d)

stop at once.

3.

People use a rescue flare to communicate with each other depending on the sense of

a)

hearing.

b)

sight.

c)

smell.

4.

Sense organs collect information and send signals to ............. for processing and understanding

a)

hands

b)

legs

c)

brain

d)

touch.

5.

All the following signals are information that the eyes receive, except

a)

green traffic light.

b)

fire alarm.

c)

signal fires.

d)

rescue flare.

6.

Animals communicate with each other by using different senses.

a)

TTrue

b)

Ffalse

7.

Sense organs can decode the information that is sent by the brain.

a)

True

b)

False

8.

Expressions on faces are codes that can help people predict our feelings.

a)

True

b)

False

9.

Different languages have similar codes.

a)

True

b)

False

10.

People use signal fires to communicate over distances of many kilometers.

a)

TTrue

b)

FFalse