Identify the parts of the experiment. Johnny wants to know which soil substrate will absorb the most solar radiation. He fills three beakers with 350 ml of soil. One beaker receives sand, one receives

Identify the parts of the experiment.

Johnny wants to know which soil substrate will absorb the most solar radiation. He fills three beakers with 350 ml of soil. One beaker receives sand, one receives black top soil and one receives clay. He leaves a fourth beaker empty. He places a thermometer in each beaker and sets them under lamps, each with a 100 watt lightbulbs. He then takes temperature readings every 10 min for 24 hours.

1) which of The following is Johnny’s scientific question?

A. Black top soil will absorb more solar radiation than clay or sand.

B. What type of soil will absorb the most solar radiation?

C. Will a 100 watt lightbulb be hot enough to heat up soil?

2) what is the independent variable?

___________

3) what is the dependent variable?

___________

4) what are the constant variables?

___________

5) what is the control group?

___________

6) which of the following is Jhonny’s hypothesis?

A. Black top soil will absorb more solar radiation than clay or sand.

B. What type of soil will absorb the most solar radiation?

C. Will a 100 watt lightbulb be hot enough to heat up soil?