1. a light bulb is turned on. it produces light and warms up. which statement is true? all the electrical energy is transformed to heat energy. some of the electrical energy is transformed to light energy and some is destroyed. all the electrical energy is transformed to light energy and heat energy. all the electrical energy is transformed to light energy.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.