Sources of Energy Test - 7

Substance with low ignition temperature is highly inflammable and will catch fire very quickly. LPG catches fire easily than others mentioned here

The glass sheet in the solar cooker creates a greenhouse effect. Glass sheet has a property that allows the infrared rays of shorter wavelength from the sun to get in the device but does not allow the IR rays of longer wavelength to leave the solar heating device.

Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium nucleus. They are generally produced in the process of alpha decay, but may also be produced in other ways

The clothes are dried by the process of evaporation. Therefore the part of light which helps in heating is infrared part of the sunlight.

Initially when the toy is at rest before winding key it is in static position which consists of potential energy and whereas when it starts moving the potential energy is changed to kinetic energy.

Wind blows due to the differences in the air pressure which is caused due to heating effect of the sun on the earth unevenly which is inturn due to the rotation of the earth.

If the products are poisonous then there will be a lot of pollution as a result of which everyone on the earth gets effects which inturn leads to the destruction of life.

It is estimated that the gulf of Kutch in Gujarat can produce about 1200MW of power using the potential of tidal energy in India.

8 Km/h minimum is required to start rotating most small wind turbines. 12.6 to 15Km/h is the typical cut in speed when a small generator starts generating power.