Define the term density of a substance.

Important Questions on Physical Quantities and Measurement

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 1 - Physical Quantities and Measurement>TEST YOURSELF>Q 13

How does the density of water changes when it is heated from $4°\mathrm{C}$ to $10°\mathrm{C}$?

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 1 - Physical Quantities and Measurement>TEST YOURSELF>Q 15

Explain the meaning of the term speed.

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 1 - Physical Quantities and Measurement>TEST YOURSELF>Q 16

Write the S.I. unit of speed.

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 1 - Physical Quantities and Measurement>TEST YOURSELF>Q 17

A car travels with a speed $12 {\mathrm{ms}}^{-1}$, while a scooter travels with a speed $36 \mathrm{km} {\mathrm{h}}^{-1}$. Which of the two travels faster?

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 1 - Physical Quantities and Measurement>TEST YOURSELF>Q 14

A car travels a distance of $15 \mathrm{km}$ in $20 \mathrm{minutes}$. Find the speed of the car in $\mathrm{km} {\mathrm{h}}^{-1}$. 

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 1 - Physical Quantities and Measurement>TEST YOURSELF>Q 14

A car travels a distance of $15 \mathrm{km} {\mathrm{h}}^{-1}$ in $20 \mathrm{minutes}$. Find the speed of the car in $\mathrm{m} {\mathrm{s}}^{-1}$.

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 1 - Physical Quantities and Measurement>TEST YOURSELF>Q 16

A boy travels with a speed of $10 \mathrm{m} {\mathrm{s}}^{-1}$ for $30 \mathrm{minutes}$. How much distance does he travel?

EASY

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 1 - Physical Quantities and Measurement>TEST YOURSELF>Q 17

Express $36 \mathrm{km} {\mathrm{h}}^{-1}$ in $\mathrm{m} {\mathrm{s}}^{-1}$.