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Published on: 18/09/2019
Force and Motion
Download Tamil Nadu 7th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Mention any two conditions for stability of a body?
2.
What are three types of stability of an object?
3.
Give one example for non-uniform acceleration
4.
Give one example for uniform acceleration
5.
If an object is moving with velocity 54 km/h. What will be its velocity in m/s?
6.
Is displacement a scalar quantity?
7.
Give one example where the displacement is zero but the distance travelled is not zero
8.
Correct your friend who says “The acceleration gives the idea of how fast the position changes”.
9.
“She moves at a constant speed in a constant direction”. Rephrase the same sentence in fewer words using concepts related to motion.
10.
All objects having uniform speed need not have uniform velocity. Describe with the help of examples.
1.
1. Increase the area of its base.
2. Lower its centre of gravity
2.
1. Stable equilibrium
2. Unstable equilibrium
3. Neutral equilibrium
3.
The motion of a car on a crowded road.
4.
The motion of a freely falling object.
5.
Velocity = 54 km/h
lkm/h=\(\frac{5}{18}\)
= 3 x 5 = 15 rn/s
\(\frac{1km}{h}=\frac{100}{3600}\) m/s
= \(\frac{5}{18}\)
6.
No, displacement is a vector quantity as it depends on direction.
7.
When an object travels is a circular path (ie. the initial and positions are same).
8.
There are two possible answers:
Velocity gives an idea of how fast the position changes. or Acceleration gives an idea of how fast the velocity changes.
9.
She moves in a straight line with constant velocity.
10.
An object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of object is constant, its velocity is changing, Ex: Merry-go-round, roller coaster, planets orbiting the sun.
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Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards
