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Ch 2: ILTS Biology: Measurement & Observation

About This Chapter

Watch some refresher lessons on scientific measurements and observation in this chapter. Our study materials include video lessons and practice quizzes that can help you prepare for the ILTS Biology test.

ILTS Biology: Measurement & Observation - Chapter Summary

These lessons offer a review of scientific techniques for measuring and observing before taking the ILTS Biology test. Concepts covered in this chapter include:

  • Exploring laboratory measurement units and types
  • Converting measurements to the metric system
  • Naming the components of the compound microscope
  • Defining a meniscus
  • Submerging objects to find volume by displacement
  • Applying different microscopy types

You can watch these short video lessons anytime you have a few minutes, on a computer, smartphone or tablet. The quizzes that follow each lesson let you assess your learning, and you can use the video tags to quickly jump back to specific parts of the lesson you need to review.

ILTS Biology: Measurement & Observation - Chapter Objectives

The ILTS Biology test looks at your understanding of basic biological concepts, including the basics for scientific lab research, in order to become a certified biology teacher in Illinois. There are six subareas on the exam, and the topics covered in this Measurement and Observation chapter can be found within the science and technology subarea.

All questions on the ILTS Biology exam are multiple choice, like the questions on our brief lesson quizzes. These quizzes let you experience answering questions in a format similar to those you'll face on test day.

6 Lessons in Chapter 2: ILTS Biology: Measurement & Observation
Test your knowledge with a 30-question chapter practice test
Understanding Laboratory Measurements: Units & Types

1. Understanding Laboratory Measurements: Units & Types

There are many different units that can be used for measurements. This may not only lead to incorrect data measurements, but also to confusion about which units are most appropriate. Therefore, a standard set of units is used for each type of measurement in the biology lab.

The Metric System: Units and Conversion

2. The Metric System: Units and Conversion

Just like you and your friend communicate using the same language, scientists all over the world need to use the same language when reporting the measurements they make. This language is called the metric system. In this lesson we will cover the metric units for length, mass, volume, density and temperature, and also discuss how to convert among them.

Introduction to the Compound Microscope: Parts & Uses

3. Introduction to the Compound Microscope: Parts & Uses

The compound light microscope is a useful tool in any biology laboratory. In this lesson, you'll be introduced to the parts of a compound microscope, as well as understand the function of each of those parts.

What Is a Meniscus? - Definition, Uses & Lab Examples

4. What Is a Meniscus? - Definition, Uses & Lab Examples

Liquids can be tricky to measure because surface tension causes them to do interesting things like forming a meniscus. In this video lesson you'll learn what a meniscus is, why it forms, and how to correctly read the volume of a liquid using the meniscus at the surface.

Using Displacement to Calculate the Volume of an Object

5. Using Displacement to Calculate the Volume of an Object

Determining the volume of an object is easy if that object is uniform and has a regular shape. For objects that are irregularly shaped, using the edges is not so straightforward, so instead we can measure the volume by displacement.

Microscopy Types & Applications

6. Microscopy Types & Applications

What is microscopy and how do we use it? Learn about the different types of microscopes and the ways we use them for practical purposes. You can then take a quiz and test what you've learned.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

Other chapters within the ILTS Science - Biology (105): Practice and Study Guide course

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