Worksheets › Class 8 › Pressure, Winds, Storms, and Cyclones
Class 8 Pressure, Winds, Storms, and Cyclones worksheet
CBSE Science. Pressure = force ÷ area in pascals, liquid and air pressure, winds, lightning and cyclone safety. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
Pressure is:
- mass ÷ volume
- distance ÷ time
- force × time
- force acting on a unit area
Answer
(d) force acting on a unit area
- 2.
A force of 2,000 N acts on an area of 5 m². What is the pressure?
- 400 Pa
- 10,000 Pa
- 2,000 Pa
- 405 Pa
Answer
(a) 400 Pa
2000 ÷ 5 = 400
- 3.
An animal weighing 28,000 N stands on four feet, each with an area of 0.5 m². What pressure does it put on the ground?
- 7,000 Pa
- 56,000 Pa
- 14,000 Pa
- 28,000 Pa
Answer
(c) 14,000 Pa
total area = 4 × 0.5 = 2 m²; 28000 ÷ 2 = 14000
Section B · short answer
- 4.
Define pressure and write its SI unit.
Answer
Force acting per unit area; pascal (N/m²).
- 5.
Does the shape of each "increase" or "decrease" pressure? (a) a pointed nail (b) a camel's broad feet
Answer
(a) increases (b) decreases
Section C · long answer
- 6.
Explain with two examples how we increase or decrease pressure in daily life.
Answer
To increase pressure we reduce area: knives are sharpened, nails are pointed. To decrease pressure we increase area: bags have broad straps, porters use a cloth ring, buildings have wide foundations.
Fresh sheets for your child
In the app, every Pressure, Winds, Storms, and Cyclones sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
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