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Which example is part of the scientific method?

A. A student reads about a new way to harness energy from the sun.

B. A researcher studies the effects of car exhaust on how people breathe.

C. A researcher analyzes how many plants respond well to a new fertilizer

D. A student discovers how insulin plays a role in the development of diabetes

Answer Explanation:

One step of the scientific method is to analyze information or data collected from the experiment to conclude whether the hypothesis is supported.

Recall that these make up the scientific method, described below:

  • Problem: The question created because of an observation. Example: Does the size of a plastic object affect how fast it naturally degrades in a lake?
  • Research: Reliable information available about what is observed. Example: Learn how plastics are made and understand the properties of a lake.
  • Hypothesis: A predicted solution to the question or problem. Example: If the plastic material is small, then it will degrade faster than a large particle.
  • Experiment: A series of tests used to evaluate the hypothesis. Experiments consist of an independent variable that the researcher modifies and a dependent variable that changes due to the independent variable. They also include a control group used as a standard to make comparisons. 
    • Example: Collect plastic particles both onshore and offshore of the lake over time. Determine the size of the particles and describe the lake conditions during this time period.
  • Observe: Analyze data collected during an experiment to observe patterns. 
    • Example: Analyze the differences between the numbers of particles collected in terms of size.
  • Conclusion: State whether the hypothesis is rejected or accepted and summarize all results.
  • Communicate: Report findings so others can replicate and verify the results.

Therefore, the Correct Answer is C.

More Questions on TEAS 7 Science

  • Q #1: An intracellular chemical signal can be produced in the cell membrane. Once it is produced, where does it go?

    A. To a different cell

    B. To another part of the same cell

    C. To a region right outside the cell

    D. To an area with a high ion concentration

    Answer Explanation

    There are two major types of receptor molecules that respond to an intercellular chemical signal:

    • Intracellular receptors: These receptors are located in either the cytoplasm or the nucleus of the cell. Signals diffuse across the cell membrane and bind to the receptor sites on intracellular receptors, of the same cell.
    • Membrane-bound receptors: These receptors extend across the cell membrane, with their receptor sites on the outer surface of the cell membrane. They respond to intercellular chemical signals that are large, water-soluble molecules that do not diffuse across the cell membrane.

  • Q #2: Which of the following atoms is a cation?

    A. 14 protons, 14 neutrons, 18 electrons

    B. 34 protons, 45 neutrons, 36 electrons

    C. 35 protons, 44 neutrons, 35 electrons

    D. 82 protons, 125 neutrons, 78 electrons

    Answer Explanation

    Because it has more protons than electrons, this atom has a positive charge and can be classified as a cation. When a metal such as sodium reacts to become stable, it loses its valence electrons. At first, it is a neutral atom with 11 protons and 11 electrons. When it loses an electron, the number of protons does not change, and the atom has 11 protons and 10 electrons. Because there is one more positively charged proton, a cation forms. A cation is an ion with a net positive charge.

  • Q #3: Fertilization (the fusing of one sperm and an ovum) results in a(n) _____.

    A. embryo

    B. fetus

    C. infant

    D. zygote

    Answer Explanation

    Human intercourse consists of the male introducing sperm into the female’s reproductive system. Sperm may then pass through the female’s reproductive system to the Fallopian tubes where one sperm fertilizes an ovum, creating a zygote. The zygote passes out of the Fallopian tube and implants into the uterine wall to begin gestation. Over nine months, the zygote develops and grows into an embryo and then a fetus. An infant is the baby that is born.