Earth Space Final Review 2020

What is the control in this experiment?

• water

• week

• grow lamp

• plant

What is the independent and dependent variable in this experiment?

• water amount, plant height

• number of weeks, plant height

• grow lamp, water amount

• grow lamp, plant height

If another person wanted to repeat this experiment, which of the following would they NOT need to know?

• The amount of water given at each watering time.

• The intensity of the grow lamp.

• The type of plant used.

• The day of the week the plants were measured.

If the original hypothesis stated that the plant watered three times a day would grow the most, what should the scientist do?

• Throw out the experiment since it didn’t match the hypothesis.

• Retry the experiment until it matches the hypothesis.

• Modify the hypothesis to fit with the new findings, and repeat the experiment.

• Create two hypotheses and repeat the experiment so that both are correct

Which of these steps would be the first step in a scientific method?

• Analyze the data and draw a conclusion.

• Make a hypothesis.

• Test the hypothesis by doing an experiment.

• Identify the problem and determine what you want to know.

What is the SI unit of mass?

• kilogram

• kilometer

• newton

• gram per cubic centimeter

What element is common to all four of these minerals?

• Silicon

• Oxygen

• Magnesium

• Carbon

Which element used above is not considered one of the eight most common elements found in the Earth’s crust?

• iron

• calcium

• aluminum

• carbon

What is true about minerals?

• They are naturally occurring and inorganic

• They can be synthetically produced.

• They are organic and inorganic.

• They are occasionally found in a liquid state.

A mineral has a mass of 150 g and a volume of 25 cm³. What is its density?

• 6 g/cm³

• 3750 g/cm³

• 175 g/cm³

• 125 g/cm³