Geetha Iyer Solutions for Exercise 4: EXERCISE

Author:Geetha Iyer

Geetha Iyer Science Solutions for Exercise - Geetha Iyer Solutions for Exercise 4: EXERCISE

Attempt the practice questions from Exercise 4: EXERCISE with hints and solutions to strengthen your understanding. Science Now 8 solutions are prepared by Experienced Embibe Experts.

Questions from Geetha Iyer Solutions for Exercise 4: EXERCISE with Hints & Solutions

HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 10 - Force and Friction>EXERCISE>Q 1

All contact and non-contact forces exhibit all effects of force.

MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 10 - Force and Friction>EXERCISE>Q 2

Muscular force is an example of _____  (contact force/non-contact force)

HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 10 - Force and Friction>EXERCISE>Q 3

A ball thrown upwards comes back; this is due to the _____ of the Earth. (gravitational force/magnetic force)

MEDIUM
8th CBSE
IMPORTANT
Science Now 8>Chapter 10 - Force and Friction>EXERCISE>Q 5

Sprinkling a little talcum powder on the carom board helps to _____ the friction. (increase/reduce)

HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 10 - Force and Friction>EXERCISE>Q 1

What are contact forces and non-contact forces?

HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 10 - Force and Friction>EXERCISE>Q 2

What are sliding friction and rolling friction? Which is more?

HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 10 - Force and Friction>EXERCISE>HOTS (Higher Order Thinking Skills)

Why is the invention of the wheel considered an important step of development in the history of science? (Hint: Rolling friction)

HARD
8th CBSE
IMPORTANT
Science Now 8>Chapter 10 - Force and Friction>EXERCISE>Identify which type of friction is depicted in the given pictures

Identify which type of friction is depicted in the given pictures.

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