Download App

Gravitation — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceGravitation4 Marks
Question
Write the differences between mass and weight of an object.
✓

Answer

 
Mass
Weight
1.
The mass of an object is the quantity of matter contained in it.
The weight of an object is the force with which it is attracted towards the centre of the earth.
2.
SI unit of mass is kilogram (kg).
SI unit of mass is newton (N).
3.
The mass of an object is constant.
The weight of an object is not constant. It changes with the change in acceleration due to gravity.
4.
The mass of an object can never be zero.
The weight of an object can be zero.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 4 Mark )" from Gravitation→Gravitation — all question types→Science STD 9 question papers→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups, one of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
  1. Keep cup A empty.
  2. Put one teaspoon sugar in cup B.
  3. Put one teaspoon salt in cup C.
  4. Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then observe the four potato cups and answer the following:
  1. Explain why water gathers in the hollowed portion of B and C.
  2. Why is potato A necessary for this experiment?
  3. Explain why water does not gather in the hollowed out portions of A and D.
→
How could you  convince a small child that when ou speak, it is not necessary for air to travel from your mouth to the ear of a listener?
→
Name the following compounds. Also write the symbols/ formulae of the ions present in them:
  1. $CuSO_4$
  2. $(NH_4)_2SO_4$
  3. $Na_2O$
  4. $Na_2CO_3$
  5. $CaCl_2$
→
One of the forms of a naturally occurring solid compound $P$ is usually used for making the floors of houses. On adding a few drops of dilute hydrochloric acid to $P,$ brisk effervescence are produced. When $50g$ of reactant $P$ was heated strongly, than $22g$ of a gas $Q$ and $28g$ of a solid $R$ were produced as products. Gas $Q$ is the same which produced brisk effervescence on adding dilute $\text{HCl}$ to$ P.$ Gas $Q$ is said to cause global warming whereas solid $R$ is used for white$-$washing.
  1. What is $(i)$ solid $P (ii)$ gas $Q,$ and $(iii)$ solid $R.$
  2. What is the total mass of $Q$ and $R$ obtained from $50g$ of $P$?
  3. How does the total mass of $Q$ and $R$ formed compare with the mass of $P$ taken?
  4. What conclusion do you get from the comparison of masses of products and reactant?
  5. Which law of chemical combination is illustrated by the example given in this problem?
→
Write the formulae of the following compounds. Also name the elements present in them.
  1. Water.
  2. Ammonia.
  3. Methane.
  4. Sulphur dioxide.
  5. Ethanol.
→
Draw a well-labelled diagram of an eukaryotic nucleus. How is it different from nucleoid?
→
Draw a well labelled diagram of animal cell and mention one function of the main cell organelles.
→
Explain how, nitrogen, oxygen and argon gases are separated form air.
→
You are given a mixture of water, groundnut oil and common salt. How will you separate groundnut oil and common salt from it?
→
A train travels the first 15km at a uniform speed of 30 km/h; the next 75km at a uniform speed of 50km/h; and the last 10km at a uniform speed of 20km/h.
Calculate the average speed for the entire train journey.
→