Scientific Method Reviw

1. A student is trying to determine if a certain beetle will help control the population of a harmful plant species. Which sequence of steps would be best suited for this investigation?

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2. A student examined a rock sample and described it as having particles of various colors that were 1 millimeter to 12 millimeters in size. The student was making

• An inference

• an observation

• Hypothesis

• A prediction

The diagram below represents a rock that was placed in a graduated cylinder containing 20 mL of water, causing the water level to rise.

• solubility

• mass

• volume

• hardness

Compared to the liquid that was in cylinder A, the liquid in cylinder B will have

• less mass and more volume

• less mass and the same volume

• the same mass and more volume

• same mass and the same volume

The student has twenty identical young plants and will try to answer this question: How does the amount of water given to these plants each day affect how tall the plant will grow? Which hypothesis is most appropriate for this experiment?

• If you change the amount of water then the plants will grow

• If you change the height of the plant then the water will change.

• If there are identical plants then the height will not change

The student has twenty identical young plants and will try to answer this question: How does the amount of water given to these plants each day affect how tall the plant will grow? What is the independent variable for this experiment?

• height of the plant

• amount of water

• twenty identical plants

The student has twenty identical young plants and will try to answer this question: How does the amount of water given to these plants each day affect how tall the plant will grow? Which tool would be needed for this experiment?

• Themometer

• ruler

• weight scale

The data table below shows the yield of vegetables in a school’s garden for three years. The yield is the number of pounds of vegetables harvested. The same number of each type of vegetable was planted every year. Which statement is an inference?

• The onion yield was greater than the beet yield in 2013.

• The butternut squash yield decreased from 2011 to 2012.

• The spinach yield was 102 pounds in 2011 and 137 pounds in 2012.

• The acorn squash yield decreased from 2012 to 2013 due to lower temperatures.