Question

A marine scientist measures the energy found in a system consisting of seagrass and sunlight. After the seagrass grows for one week, the marine scientist concluded that radiant energy from the sunlight was transformed to chemical energy in the seagrass. Does this result validate or invalidate the Law of Conservation of Energy?
A=Validate, because energy cannot be created or destroyed but can change forms.
B= Invalidate, because energy should not enter an open system
C= Validate, because the overall energy in the seagrass is less
D= Invalidate, because this scenario describes an isolated system

Answer 1

Answer: A=Validate, because energy cannot be created or destroyed but can change forms.

Plants absorbs energy from sun, to prepare their food in the form of carbohydrates by photosynthesis.This chemical energy from food is required by the plants for cellular metabolism. The same process will occur in sea grass.

The law of conservation of energy, says that energy can neither be created nor be destroyed, but it can change it's form. In the given situation, the sunlight energy is converted into chemical energy in plants. Therefore, it can be said that radiant energy from the sun is conserved in the form of chemical energy in sea grass.

Therefore, the results of the experiment, is validate, because energy cannot be created or destroyed but can change forms.

Answer 2

` law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.
The right answer would be A)