EVERYDAY SCIENCE

Detailed explanation-1: -A hypothesis is a tentative explanation that can be tested by further investigation. A theory is a well-supported explanation of observations. A scientific law is a statement that summarizes the relationship between variables. An experiment is a controlled method of testing a hypothesis.

Detailed explanation-2: -A hypothesis is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, it needs to tested using scientific method(s). Scientists generally base scientific hypotheses on previous observations that cannot be explained otherwise.

Detailed explanation-3: -A controlled experiment is simply an experiment in which all factors are held constant except for one: the independent variable. A common type of controlled experiment compares a control group against an experimental group. All variables are identical between the two groups except for the factor being tested.

Detailed explanation-4: -An experiment is a set of controlled observations that test the hypothesis.

Detailed explanation-5: -An experiment is a procedure that tests a hypothesis by the process of collecting information under controlled conditions.