E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Higher-order Thinking Skills
Author:E Doris James, Vandana Tirath, Anton Siromani & Kiran Banerji
E Doris James Science Solutions for Exercise - E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Higher-order Thinking Skills
Attempt the practice questions from Exercise 4: Higher-order Thinking Skills with hints and solutions to strengthen your understanding. New Science Ahead 8 solutions are prepared by Experienced Embibe Experts.
Questions from E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Higher-order Thinking Skills with Hints & Solutions
MEDIUM
8th CBSE
IMPORTANT
Why is rolling friction less than sliding friction? (Hint Draw an illustration of the surfaces in contact in both cases. In which case is the area of the contact surface greater?)
MEDIUM
8th CBSE
IMPORTANT
Can you think of a situation where it is necessary to increase air resistance on a falling object? How is it done?
MEDIUM
8th CBSE
IMPORTANT
Water on a smooth floor can make you slip. This means water is also a lubricant. Can you think of reasons why oil and grease, and not water, are used in machines as lubricants? (Hint: Think of evaporation and corrosion.)
