Download App

Work, Power And Energy — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceWork, Power And Energy3 Marks
Question
What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy.
✓

Answer

Gravitational potential energy: The potential energy due to the position of the body above the ground is gravitational potential energy. Example: Water in the overhead tank has gravitational potential energy due to its height above the ground. Elastic potential energy: The potential energy due to change in shape and size of the body is elastic. Example: A stretched rubber has elastic potential energy due to change in its shape.

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 3 Mark )" from Work, Power And Energy→Work, Power And Energy — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

What forms the basis of classification of tissues present in plants and animals?
→
A car is moving on a straight road with uniform acceleration. The speed of the car varies with time as follows:
Time (s) $0$ $2$ $4$ $6$ $8$ $10$
Speed (m/s) $4$ $8$ $12$ $16$ $20$ $24$
Draw the speed-time graph by choosing a convenient scale. From this graph:
  1. Calculate the acceleration of the car.
  2. Calculate the distance travelled by the car in $10$ seconds.
→
If $K$ and $L$-shells of an atom are full and in $M$-shell, there is only one electron, then what would be the total number of electrons in the atom? Name the element. Write the symbol and draw the Bohr model.
→
In an experiment, $1.288g$ of barium sulphate was obtained from $1.03g$ of barium. In another experiment, $3.672g$ of barium sulphate gave, on reduction, $2.938g$ of barium. Show that these figures verify the law of constant proportions.
→
Explain any one method of crop production which ensures high yield.
→
Why does moon have very cold and very hot temperature variations e.g. from $-190^\circ\ C$ to $110^\circ\ C$ even though it is at the same distance from the sun as the earth is?
→
List the chemical whose biomagnifications result in following diseases in humans:
  1. Minamata disease
  2. Itai Itai disease.
→
A stone is dropped from a height of $20m$. What will be its speed when it hits the ground? $(g = 10m/s^2)$
→
The scientists now say that there are actually five states of matter $A, B, C, D$ and $E$. The state A has a fixed volume but no fixed shape. The state B can be compressed very easily by applying pressure and state $C$ has a fixed shape as well as a fixed volume. The state $D$ is mixture of free electrons and ions whereas state E is named after an Indian scientist and a famous physicist.
  1. Name the physical states $(i) A\ (ii) B\ (iii) C\ (iv) D$, and $(v) E$.
  2. Name one substance belonging to state $C$ which can directly change into vapours on heating. What is this process known as?
  3. Name one substance which normally belongs to state B but whose solid form changes directly into gaseous state.
  4. Name the most common substance belonging to state $A$.
  5. Which state of matter makes the sum and other stars to glow.
→
How are CFCs harmful?
→