ข้อสอบวิชาวิทยาศาสตร์เพิ่มเติม ม.3(โครงงาน)

The correct answer is ก. โครงงานประเภทสิ่งประดิษฐ์ (Project type: Invention). This is because the coconut husk peeling machine mentioned in the question is a physical device or invention that is designed to remove the husk from coconuts.

The correct answer is "ค. โครงงานประเภทสำรวจ" because the question is asking about a project that involves surveying soil conditions, temperature, and moisture in an area where seedlings are visible. This type of project falls under the category of surveying, as it involves collecting data and information about specific conditions in a particular area.

The summary content of the project can be viewed from the abstract section.

The correct answer is ง. 4. This answer is correct because the question is asking how many types of science projects there are, and the answer "4" implies that there are four different types of science projects.

The question asks about the variable that should be considered when studying which soil type is suitable for growing corn. The correct answer is "ก. ชนิดของดิน" (soil type). This is because different soil types have different properties and characteristics that can affect the growth and development of corn plants. Factors such as soil pH, texture, fertility, and drainage can all impact the ability of corn plants to absorb nutrients and water, as well as their overall health and productivity. Therefore, it is important to consider the soil type when determining the suitability of an area for corn cultivation.

เอกสารอื่นๆที่ไม่ได้ใส่ไว้ในส่วนเนื้อหาจะถูกใส่ไว้ในภาคผนวก (Appendix) ซึ่งเป็นส่วนที่ใช้ในการนำเสนอข้อมูลเพิ่มเติมที่เกี่ยวข้องกับเนื้อหาหลัก ส่วนภาคผนวกนี้อาจประกอบด้วยตารางข้อมูล สมการ รูปภาพ หรือข้อมูลเพิ่มเติมที่อาจมีประโยชน์ต่อผู้อ่านในการเข้าใจเนื้อหาหลัก

The correct answer is "ค. บทที่ 3." This answer suggests that the method of operation is written in Chapter 3.

The correct answer is ข. โครงงานประเภททดลอง (Experimental project). This is because the question asks about the method of studying germination of sprouts, which involves conducting experiments to observe and analyze the process. Therefore, it falls under the category of experimental projects.

เอกสารอ้างอิงเขียนไว้ในส่วนของบรรณานุกรม

The correct answer is "ข. กิตติกรรมประกาศ" (acknowledgements). In academic writing, it is customary to include a section at the beginning or end of a project to acknowledge and express gratitude to individuals or organizations who have contributed to the success of the project. This section is commonly referred to as "กิตติกรรมประกาศ" in Thai. It allows the author to recognize the support, guidance, or assistance provided by others in completing the project.

The source and importance of the project are written in Chapter 1.

The correct answer is "ข. บทที่ 2". This is because in academic writing, related documents and projects are typically discussed and written about in Chapter 2 of a research paper or thesis. Chapter 2 usually focuses on the literature review, where previous studies and relevant documents are reviewed and discussed. Therefore, it is appropriate to write about related documents and projects in Chapter 2.

The analysis results are written in Chapter 4.

The question is asking which variable should be considered when studying the suitability of soil for growing corn. The correct answer is "ง. การเจริญเติบโตของข้าวโพด" (growth of corn). This means that the growth of corn should be taken into account when determining the suitability of soil for corn cultivation.

The correct answer is ค.) ก , ข, ค ... The question is asking for the numbering format to be used before the content section. In Thai language, the numbering format is typically represented by the characters ก, ข, ค, etc. Therefore, the correct answer is ค.) ก , ข, ค ... which represents the correct numbering format in Thai language.

The correct answer is ง. 5 บท. The question is asking how many sections the content of a scientific project is divided into. The answer is 5 sections.

The correct answer is ง. ถูกทั้ง ก และ ข. This is because the question is asking which type of variable is being studied, and both ก. ตัวแปรต้น (independent variable) and ข. ตัวแปรอิสระ (dependent variable) are types of variables that can be studied in research. Therefore, the correct answer is that the variable being studied can be either an independent variable or a dependent variable.

This question asks which option is not a controlled variable when studying the suitability of different soil types for growing corn. The correct answer is option ก. ชนิดของดิน (soil type) because in this study, the soil type is the independent variable that is being manipulated or controlled to observe its effect on the growth of corn. The other options, ข. พันธุ์ข้าวโพด (corn variety), ค. ปู๋ย (fertilizer), and ง. น้ำ (water), are all dependent variables that are influenced by the independent variable, which is the soil type.

The correct answer is ข. ส่วนเนื้อเรื่อง (Main content). In a scientific research report, the main content is the most important part as it contains the detailed information about the research methodology, results, analysis, and conclusions. It presents the core findings and arguments of the study, providing the reader with a comprehensive understanding of the research. The other parts, such as the introduction and conclusion, are important as well, but the main content is where the bulk of the research is presented and discussed.

The correct answer is ข. 3 ส่วน (3 sections). This suggests that a scientific project report is divided into three main sections.