Match the following terms to their definitions.
1. empirical evidence
data or facts that can be observed
2. independent variable
the variable that changes in response to experimentation
3. dependent variable
the quantity in an experiment that remains unchanged
4. control
a proposed explanation for a scientific problem
5. hypothesis
the experimental factor that is changed by the scientist

Explanation:

1.empirical evidence  

data or facts that can be observed  

2.independent variable  

 the experimental factor that is changed by the scientist

3.dependent variable  

the variable that changes in response to experimentation

4.control  

the quantity in an experiment that remains unchanged

5.hypothesis  a proposed explanation for a scientific problem

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint