Ice actually has a very different structure than liquid water, in that the molecules align themselves in a regular lattice rather than more randomly as in the liquid form. It happens that the lattice arrangement allows water molecules to be more spread out than in a liquid, and, thus, ice is less dense than water.
Wavelength light source is part of the control group for William’s experiment
<u>Explanation:</u>
Sir William wanted to conduct an experiment to observe how much heat passed through different colour filters of the sunlight. He directed sunlight to pass through the prism and observed vibgyor and measured the temperature. He found that the temperature increased from violet to red.
Then he was inquisitive to find the temperature beyond the red ray. That’s when he found the infrared rays which had higher temperature that was not to be seen through naked eyes. He performed experiments using the light source and found that the wavelength of light are not refracted in a particular pattern.
Answer:
The correct answer would be D.Garden plants grow better in wet soil than in dry soil.
Scientific hypothesis refers to a proposed or tentative explanation for the occurrence of a particular phenomenon.
Testable hypothesis are those which can be approved or denied on the basis of results of any testing, experience, or data collection.
From the given choices, only fourth hypothesis can be scientifically or experimentally tested.
Same types of plants can be grow in dry and wet soils keeping all other variables constant (such as temperature, light, nutrients et cetera) in order to check the effects of the soil on the plant growth.
