"Try Scientific Inquiry" Entering the World of Physics PPT Courseware 2

Description

"Try Scientific Inquiry" Entering the World of Physics PPT Courseware 2

learning target

(1) Through scientific inquiry, understand the process and general steps of scientific inquiry.

(2) Experience scientific inquiry, gain a general understanding of the scientific inquiry process, understand several important links of scientific inquiry, and tap students' inquiry abilities in the scientific inquiry process. Especially the ability to abstract and hypothesis test.

(3) Understand a basic method of scientific inquiry-the variable control method.

1. Explore the mystery of the pendulum

1. Ask questions

What determines the time it takes for the pendulum to swing back and forth once?

Asking questions is sometimes more important than solving them.

2. Conjectures and Assumptions

Method rules: In the process of experimental exploration, if you want to explore a variable, you must control other variables unchanged. This method of researching the problem is called the controlled variable method.

3. Design experiments and formulate plans

Use a small ball suspended from a thin string to replace the pendulum of a pendulum clock and study the swing patterns of the pendulum.

Option 1: (different balls)

Verify whether the swing speed is related to the weight of the swing ball. Use two pendulum devices, and under the same conditions (such as the length of the thin wire, the deviation angle), change the mass of the ball and verify whether the two pendulums swing at the same speed.

Option 2: (Suspension lines of different lengths)

Verify the relationship between the swing speed and the length of the cycloid, keeping other conditions the same.

Option 3: (different swing angles)

Verify the relationship between the swing speed and the swing angle, keeping other conditions the same.

4. Conduct experiments and collect evidence

1) Explore whether the swing speed is related to the weight of the swing ball

2) Explore the relationship between swing speed and swing angle

3) Explore the relationship between the swing speed and the length of the cycloid

5. Analysis and demonstration

When the lengths of the cycloid are equal, the swing speed of the pendulum ball has nothing to do with the weight (material) of the pendulum ball;

The time it takes for the pendulum ball to swing once is only related to the length of the cycloid; the longer the cycloid, the slower the pendulum ball swings.

Evaluation through the inquiry process is essential.

Assessment generally includes the following aspects:

(1) Is the experimental data measured accurately and what can be done to make the error smaller;

(2) Whether the conclusion of the experiment is consistent with life experience and reality;

(3) Factors that were not considered before the experiment may affect the experiment;

(4) What difficulties were encountered during the experiment, how were they solved, what experiences and lessons were learned, etc.

Practice in class

1. _________ is the first step in scientific inquiry.

2. Newton said that without ________, no great discovery could be made. In scientific inquiry, conjectures and hypotheses are tentative explanations based on one's own _______ and _______.

3. The process of scientific inquiry is composed of seven elements: raising questions, ________, making plans and designing experiments, ____________, ___________, evaluation and communication, among which _______ is an indispensable and important factor throughout the entire process.

4. (Jiangsu Changzhou High School Entrance Examination) After the shot put throwing activity in the physical education class, the students discussed the materials for making the "shot put". Some students thought that the "shot put" was made of iron and borrowed a magnet from the laboratory to suck it. "Suck it." "This process belongs to scientific inquiry ( )

A. Question B. Guess C. Experiment D. Draw conclusion

5. Among the following tools for measuring time, the one that utilizes the "principle of isochrony of the pendulum" is ()

A. Mechanical watch B. Hourglass C. Pendulum clock D. Stop watch

6. Regarding physical experiments, which of the following statements is correct ( )

A. You don’t have to do the experiment yourself, just watch what others do and remember the results.

B. If the data obtained from the experiment does not match the teacher's, you can refer to the teacher's for modification.

C. Sometimes it is necessary to perform multiple measurements and average them in order to reduce errors.

D. Sometimes one physical quantity is kept constant and the value of another physical quantity is changed. Multiple experiments are conducted to find the relationship between the physical quantity and the physical quantity that remains unchanged.

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For more information about the PPT courseware "Entering the World of Physics and Trying Scientific Inquiry", please click the "Entering the World of Physics ppt and Trying Scientific Inquiry ppt" tag.

"Try Scientific Inquiry" Entering the World of Physics PPT courseware:

"Try Scientific Inquiry" Entering the World of Physics PPT Courseware Learning Objectives 1. Understand the basic process and steps of scientific inquiry 2. Learn the basic methods of scientific inquiry through the study of the swing of a pendulum. Preview before class 1. The process of scientific inquiry includes the following elements:_______..

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Update Time: 2024-10-19

This template belongs to Physics courseware Guangdong and Shanghai version of eighth grade physics volume one industry PPT template

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