In most of the continental locations speed of wind is high during
Summer
Winter
Rainy
Spring
The process by which green plants trap heat energy from the Sun to prepare food is:
Phototropism
Photosensitive
Photometry
Photosynthesis
Which of the following is not a fossil fuel?.
Coal
Petroleum
Petrol
All of these
Which energy is used to run heavy machines?
Heat energy
Electrical energy
Light energy
Chemical energy
Which of the following statement is wrong.
Biogas is used for cooking and lighting
Biogas is used as a fuel to run engines
Biogas is a non-renewable source of energy
Biogas is used for generation of electricity
When ice is heated, it changes into____________.
Water
Watervapour
Solid
None of these
Speed and direction of wind can be measured by which instrument?
Anemometer
Ammeter
Aerometer
Acidimeter
A Solar water heater cannot be used get hot water on which day?
Sunny day
Hot day
cloudy day
Windy day
_______ energy of flowing water is used to transport heavy loads of wood from forests in hilly areas
Hydro electricity
Kinetic
Moving
Mechanical
