Look at the diagram. Explain what we need to measure in order to calculate kinetic energy and potential energy.
Important Questions on Energy
I am a quantity that can be measured or calculated. I can take many forms. I am always there when any activity takes place. I am stored by objects. I can be transferred between forms and between objects. I can never be created or destroyed.
What am I? _____
Choose the best answer from the list.
When we switch on a lamp:
Look at the bar chart given below. Write a conclusion for the data in the chart.
There are different stages in the way coal forms. Write numbers against the following statements to show the correct order. One answer is done in the question.
| A very long time ago, trees used the energy from sunlight to grow | 1 |
|
The squashed remains hardened to form coal |
|
| Eventually, the trees died and fell over into boggy round | |
| Over time, the amount of soil and rocks on top increased and squashed the tree remains | |
| Layers of soil and rocks settled on top of the tree remains |
Hydroelectricity is a renewable source of energy. Describe the water cycle that produces hydroelectricity.
