Upload
abraham-carter
View
216
Download
0
Tags:
Embed Size (px)
Citation preview
The Nature of Sciencep. 33 of Worksheet Packet
Fill in the blanks, please.
Section 1: The Methods of Science
A. Science studies natural patterns. 1. Science is classified
into three main categories: Life Science, Earth Science and Physical Science. Sometimes they overlap.
Section 1: The Methods of Science
2. Science explains the natural world; explanations can change over time.
Section 1: The Methods of Science
3. Scientists investigate nature by observation, experimentation, or modeling.
Section 1: The Methods of Science
B. Scientific Method-an organized set of investigation procedures 1. State a problem. 2. Gather information. 3. Form a hypothesis.
Section 1: The Methods of Science
4. An experiment with variables is a common way to test a hypothesis.
a. A dependent variable changes value as other variables change.
Section 1: The Methods of Science
B. An independent variable is changed to determine how it will affect the dependent variable.
Section 1: The Methods of Science
c. A variable that does not change when other variables change is a constant.
5. Analyze data from an experiment or investigation.
Section 1: The Methods of Science
d. A ________ is the standard to which test results can be compared.
Control!
Section 1: The Methods of Science
6. Form a conclusion based on the data.
7. Reduce bias by keeping accurate records, using measurable data and repeating the expt.
Section 1: The Methods of Science
C. Models represent ideas, events, or objects and can be physical or computerized.
Section 1: The Methods of Science
D. A theory is an explanation based on many observations and investigations; a scientific law is a statement …always true.
Section 1: The Methods of Science E. Science deals with the
natural world; questions of value or emotion cannot be answered.
Section 1: The Methods of Science F. Technology-applied
science helping people. Discuss: What area of
questioning is science restricted to?
Section 1: The Methods of Science
F. Technology-applied science helping people.
Discuss: What are of questioning is science restricted to?
Ans.: the natural world.
Section 2: Standards of Measurement
A. Standard-exact quantity that people agree to use for comparison.
B. Measurement must be taken carefully.
Standards of Measurement
Section 2: Standards of Measurement
1. Precision describes how closely measurements are to each other and how carefully they were made.
Section 2: Standards of Measurement
2. Accuracy compares a measurement to the real or accepted value.
C. Measurements must have a number and a unit.
Section 2: Standards of Measurement
1. SI-an improved version of the metric system used and understood by scientists worldwide.
Section 2: Standards of Measurement
2. SI system is based on multiples of 10 and uses prefixes to indicate a a specific multiple.
Section 2: Standards of Measurement
D. Length is measured using a unit appropriate for the distance between two points.
E. Volume-the amount of space in an object.
Section 2: Standards of Measurement
F. Mass-measure of matter in an object. 1. Density-mass per unit
volume of a material. 2. A unit obtained by
combining different SI units is a derived unit.
Section 2: Standards of Measurement
G. Time is the interval between two events; temperature is measured using a thermometer.
Section 2: Standards of Measurement
Discussion Question: What is the SI measurement system?
Section 2: Standards of Measurement
Discussion Question: What is the SI measurement system?
An improved version of the metric system used by scientists.
Section 3: Communicating with Graphs
A. Graph – visual display of information or data that is used to detect patterns.
Section 3: Communicating with Graphs
B. A line graph show a relationship where the dependent variable changes due to a change in the independent variable.
Section 3: Communicating with Graphs
1. The scale should make the graph readable.
2. The x-axis should always be used for the independent variable.
3. Units of measurement must be consistent.
Section 3: Communicating with Graphs
C. Bar graphs compare information collected by counting.
1. Each bar represents a quantity counted at a particular time.
Section 3: Communicating with Graphs
D. Circle graphs show how a whole is broken into parts.
1. The parts in a circle graph usually are represented as percentages of the whole.
Section 3: Communicating with Graphs
Quick quiz: 1. Which axis should
always be used for the independent variable?
2. Which type of graph is useful for counted data?
Section 3: Communicating with Graphs
Quick quiz: 1. The x-axis is used for
the independent variable.
2. A bar graph is useful for info. collected by counting.