A gardener is concerned that her greenhouse is getting too hot from too much light, and seeks to shade her plants with colored translucent plastic sheets. What color should she use to reduce overall light energy, but still maximize plant growth?

A) green
B) blue
C) yellow
D) orange
E) any color will work equally well

A. Green

Explanation:

A green green house shade will be best to suit this purpose because green shades are best for nursery stock, pot plants, caladiums, lettuce and plants that require partial shade.

b) Blue

Explanation:

The color of light reflecting on plants tend to to affect photosynthesis (how the plants produce their food). Plants needs all visible colors of light except green. Plants react in different ways to different colours of light they are exposed to. The red light helps plants but only helps then to grow flowers, the yellow colour is not ideal because it will do little to protect from heat due to too much light. But the blue colour helps in good vegitative growth of the leaves and it also does a good job in absorbing heat.

Since the gardner wants to shade her plants with coloured transluscent plastic sheets, the ideal plastic sheet colour will be blue, because blue is a good absorber of heat and it also does tremendously well in the vegetation of plants.

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.