MEDIUM
8th CBSE
IMPORTANT
Earn 100

The value of atmospheric pressure on the earth's surface at sea level.

(Choose from: 1 kPa/100 kPa/ 10 kPa

75% studentsanswered this correctly

Important Questions on Unit Test Paper-4

MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 26 - Unit Test Paper-4>Unit Test Paper>Q C
The instrument used to measure atmospheric pressure. (Hygrometer/barometer)
MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 26 - Unit Test Paper-4>Unit Test Paper>Q C
The collective name given to instruments such as the harmonica, flute, and trumpet.
EASY
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 26 - Unit Test Paper-4>Unit Test Paper>Q D

What are contact forces?

MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 26 - Unit Test Paper-4>Unit Test Paper>Q D

Give one method by which we can increase friction.

MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 26 - Unit Test Paper-4>Unit Test Paper>Q D

A force of 4 N is applied over an area of 2 m2. Calculate the pressure produced.

MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 26 - Unit Test Paper-4>Unit Test Paper>Q D

What is inaudible sound?

MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 26 - Unit Test Paper-4>Unit Test Paper>Q D

Name any two effects of noise pollution.

MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 26 - Unit Test Paper-4>Unit Test Paper>Q E

What are non-contact forces? Describe the three non-contact forces.