Biology Unit 1 Pre -test

1. Which of the following is not part of the scientific method?

Conclusion

Data Collection

Observation

Wandering Variables

The scientific method is a systematic approach used to investigate and understand the natural world. It involves making observations, collecting data, forming hypotheses, conducting experiments, analyzing results, and drawing conclusions. "Wandering Variables" is not part of the scientific method. This term does not have a specific meaning in the context of scientific inquiry and is not a recognized step or component of the scientific method.

Explanation

The scientific method is a systematic approach used to investigate and understand the natural world. It involves making observations, collecting data, forming hypotheses, conducting experiments, analyzing results, and drawing conclusions. "Wandering Variables" is not part of the scientific method. This term does not have a specific meaning in the context of scientific inquiry and is not a recognized step or component of the scientific method.

2. The step by step directions for a lab activity are called the...

Process

Procedure

Prototype

To do list

The step by step directions for a lab activity are called the procedure. A procedure outlines the specific steps and instructions that need to be followed in order to complete the lab activity accurately and safely. It provides a clear and organized plan for conducting the experiment or activity, ensuring that all necessary actions are taken in the correct order. A procedure helps to ensure consistency and reproducibility in scientific experiments and activities.

Explanation

The step by step directions for a lab activity are called the procedure. A procedure outlines the specific steps and instructions that need to be followed in order to complete the lab activity accurately and safely. It provides a clear and organized plan for conducting the experiment or activity, ensuring that all necessary actions are taken in the correct order. A procedure helps to ensure consistency and reproducibility in scientific experiments and activities.

3. You are walking down the street and see a young man walking towards you wearing sagging shorts, an oversized t-shirt and large silver necklace chain with a large pendant hanging on it. Which of the following is an INFERENCE about the young man

He is wearing sagging shorts

He is walking

He must get in trouble at school

He is wearing a necklace

The given answer, "He must get in trouble at school," is not supported by any information provided in the question. The question only describes the young man's appearance and actions, such as wearing sagging shorts, walking, and wearing a necklace. There is no mention or indication of his behavior at school or any trouble he might get into. Therefore, this inference cannot be made based on the given information.

Explanation

The given answer, "He must get in trouble at school," is not supported by any information provided in the question. The question only describes the young man's appearance and actions, such as wearing sagging shorts, walking, and wearing a necklace. There is no mention or indication of his behavior at school or any trouble he might get into. Therefore, this inference cannot be made based on the given information.

4. Researchers at a the Cleveland Museum of Natural History have noticed that there are fewer dragonfly larvae in the feeder creeks of the Rocky River Reservation. Which of the following would be a testable hypothesis to explain this:

Larvae don't like to live on the west side of the Rocky River

Larvae like to eat small insect eggs

If there is a drop in water temperature, it can lead to a decrease in dissolved oxygen levels. This decrease in dissolved oxygen can be harmful to the larvae, potentially killing them off. This hypothesis suggests that the change in water temperature is directly impacting the survival of the dragonfly larvae.

Explanation

If there is a drop in water temperature, it can lead to a decrease in dissolved oxygen levels. This decrease in dissolved oxygen can be harmful to the larvae, potentially killing them off. This hypothesis suggests that the change in water temperature is directly impacting the survival of the dragonfly larvae.

5. The independent variable in an experiment is the variable that is:

Controlled by the experimenter

Effected by the experiment

Not effected by anything anyone does to the experiment

Variable that can be left out of the experiment

The independent variable in an experiment is the variable that is controlled by the experimenter. This means that the experimenter has the ability to manipulate or change the independent variable in order to observe its effect on the dependent variable. By controlling the independent variable, the experimenter can determine the cause and effect relationship in the experiment.

Explanation

The independent variable in an experiment is the variable that is controlled by the experimenter. This means that the experimenter has the ability to manipulate or change the independent variable in order to observe its effect on the dependent variable. By controlling the independent variable, the experimenter can determine the cause and effect relationship in the experiment.