Exploring Biology Basics: Nature of Science Concepts

The video tutorial introduces the nature of science, emphasizing its empirical basis and the importance of data and experimentation. It clarifies key scientific terms like fact, principle, law, and theory, and explains the scientific method, including hypothesis formation and testing. The tutorial discusses precision and accuracy in measurements, guides on designing experiments with controlled variables, and covers data analysis and drawing conclusions. It concludes with the relationship between science, technology, and engineering, highlighting their roles in solving real-world problems.

What is a fact in science?

• A principle based on repeated experiments

• A hypothesis that has been proven

• A verifiable observation

• An opinion that is widely accepted

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Which of the following best describes a scientific theory?

• An explanation of an observed phenomenon

• A random idea

• A principle that describes a pattern in nature

• A hypothesis that has been tested once

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What is the first step in the scientific method?

• Analyzing data

• Making a hypothesis

• Conducting background research

• Asking a question

What is an observation in science?

• A hypothesis

• A description based on senses

• A subjective opinion

• A theory

Which of the following is a qualitative observation?

• The temperature is 25°C

• The liquid is green

• The mass is 50 grams

• The liquid is 100 ml

What does precision in data collection refer to?

• The number of measurements taken

• How close measurements are to the correct value

• How close measurements are to each other

• The type of instrument used

What is the purpose of a control group in an experiment?

• To ensure the experiment is biased

• To introduce new variables

• To serve as a standard for comparison

• To manipulate variables

What is an independent variable?

• The variable that is used for comparison

• The variable that is measured

• The variable that is kept constant

• The variable that is deliberately changed

What is the main goal of technology in relation to science?

• To disprove scientific laws

• To replace scientific methods

• To apply scientific discoveries to meet human needs

• To create new scientific theories

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What is the first step in the technological design process?

• Identifying the problem

• Evaluating the design

• Building a prototype

• Testing the solution