Question

check for understanding
true false unsure
forming a hypothesis is the first step of the scientific method.
a scientific law is different from a scientific theory because it describes something in nature without attempting to explain it.
in order for a hypothesis to be testable, scientist need to be able to carry out investigations that will either support or disprove it.
the experimental group is a group that is left alone during the experiment.
the manipulated variable is the same thing as the independent variable.

question 8
check for understanding
classify each observation below as qualitative or quantitative
qualitative quantitative
a solution begins to vigorously bubble or smoke
the mass of the object decreases as reaction proceeds
ice floats on water
the temperature of patient is taken
distance is measured between planets

Explanation:

First Set of True/False/Unsure Questions:

1. Forming a hypothesis is the first step of the scientific method.

• Answer: False
• Brief Explanations: The first step of the scientific method is making an observation or asking a question, not forming a hypothesis.

1. A scientific law is different from a scientific theory because it describes something in nature without attempting to explain it.

• Answer: True
• Brief Explanations: Scientific laws describe phenomena (e.g., “gravity makes objects fall”), while theories explain why phenomena occur (e.g., the theory of gravity explains how/why gravity works).

1. In order for a hypothesis to be testable, scientists need to be able to carry out investigations that will either support or disprove it.

• Answer: True
• Brief Explanations: A testable hypothesis must be falsifiable (able to be proven false) or verifiable through experiments/observations.

1. The experimental group is a group that is left alone during the experiment.

• Answer: False
• Brief Explanations: The control group is left alone (untreated) to compare with the experimental group, which receives the treatment/variable.

1. The manipulated variable is the same thing as the independent variable.

• Answer: True
• Brief Explanations: The independent (manipulated) variable is the factor changed by the experimenter to observe its effect on the dependent variable.

Question 8: Classify Observations as Qualitative or Quantitative

• A solution begins to vigorously bubble or smoke
• Answer: qualitative
• Brief Explanations: Describes a quality (appearance of bubbling/smoking) without numbers.

• The mass of the object decreases as reaction proceeds
• Answer: quantitative
• Brief Explanations: Involves a quantity (mass, which is measured numerically).

• Ice floats on water
• Answer: qualitative
• Brief Explanations: Describes a quality (behavior of ice floating) without numbers.

• The temperature of patient is taken
• Answer: quantitative
• Brief Explanations: Temperature is a quantity measured with numbers (e.g., 37°C).

• Distance is measured between planets
• Answer: quantitative
• Brief Explanations: Distance is a quantity measured with numbers (e.g., kilometers, light - years).

Answer:

First Set of True/False/Unsure Questions:

1. Forming a hypothesis is the first step of the scientific method.

• Answer: False
• Brief Explanations: The first step of the scientific method is making an observation or asking a question, not forming a hypothesis.

1. A scientific law is different from a scientific theory because it describes something in nature without attempting to explain it.

• Answer: True
• Brief Explanations: Scientific laws describe phenomena (e.g., “gravity makes objects fall”), while theories explain why phenomena occur (e.g., the theory of gravity explains how/why gravity works).

1. In order for a hypothesis to be testable, scientists need to be able to carry out investigations that will either support or disprove it.

• Answer: True
• Brief Explanations: A testable hypothesis must be falsifiable (able to be proven false) or verifiable through experiments/observations.

1. The experimental group is a group that is left alone during the experiment.

• Answer: False
• Brief Explanations: The control group is left alone (untreated) to compare with the experimental group, which receives the treatment/variable.

1. The manipulated variable is the same thing as the independent variable.

• Answer: True
• Brief Explanations: The independent (manipulated) variable is the factor changed by the experimenter to observe its effect on the dependent variable.

Question 8: Classify Observations as Qualitative or Quantitative

• A solution begins to vigorously bubble or smoke
• Answer: qualitative
• Brief Explanations: Describes a quality (appearance of bubbling/smoking) without numbers.

• The mass of the object decreases as reaction proceeds
• Answer: quantitative
• Brief Explanations: Involves a quantity (mass, which is measured numerically).

• Ice floats on water
• Answer: qualitative
• Brief Explanations: Describes a quality (behavior of ice floating) without numbers.

• The temperature of patient is taken
• Answer: quantitative
• Brief Explanations: Temperature is a quantity measured with numbers (e.g., 37°C).

• Distance is measured between planets
• Answer: quantitative
• Brief Explanations: Distance is a quantity measured with numbers (e.g., kilometers, light - years).