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Scientific Tools and measurement In science, a tool is something you use to collect data, or information. Scientists use tools to help them observe, describe, compare, measure, and communicate. Balance scale, beaker, data, equal, hand lens, mass, measurement, microscope, record, ruler, senses, telescope, temperature, thermometer, tool, volume. What kind of tools do scientist use? Scientific … Read More “What are scientific tools and Measurement?” »

What is data collection and analysis in science? Data collection is the process of gathering and measuring information on variables of interest, in an established systematic fashion that enables one to answer stated research questions, test hypotheses, and evaluate outcomes. What is data analysis in a science experiment? Data analysis is a systematic process of … Read More “What is data collection and analysis in science?” »

Controlled Variable A controlled variable is one which the scientist holds constant (controls) during an experiment. Thus, we also know the controlled variable as a constant variable or sometimes as a “control” only. However, the control variable is not part of an experiment, but it is important because it can have an effect on the … Read More “What are controlled variables?” »

Dependent Variable A dependent variable is the one which we can test in a scientific experiment, in order to get its values. The dependent variable is obviously ‘dependent’ on the independent variable. Hence as the experimenter changes the independent variable, we can now observe and record the change in the dependent variable. So while taking … Read More “Explain dependent variable with example” »

What are the 3 variables in science? These changing quantities are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled. Example: Topic- Plants grow faster in warmer temperatures.   Independent Variable: Temperature Dependent Variable: Plant … Read More “What are scientific variables?” »

What is the Scientific Method? The scientific method is a process for experimentation that is used to explore observations and answer questions. There are seven steps to the scientific method: Question, Research, Hypothesis, Experiment, Data Analysis, Conclusion, and Communication Scientific Method Examples Following is an example of the scientific method: Growing bean plants: What is … Read More “What is the Scientific Method?” »

MCQ questions -X-ray -Science cycle –3 1.In radiotherapy, X-rays are used to: Detect bone fracture Treat cancer Detect skin disease Detect fault in the radio receiving circuit Ans: D 2.X-rays will not show the phenomena of———– Diffraction Polarization Interference Deflection by an electric field Ans: D 3.In radiotherapy, X-rays are used to: Detect bone fracture … Read More “MCQ questions -X-ray -Science cycle -3” »

What are medical devices? Sonogram, x-ray, magnetic resonance imaging, ultrasound. Sonography: The scientific process of developing medical images Ultrasound: The technology that sonographers (people who specialize in sonography) use to generate medical images Sonogram: The medical image that is produced after the completion of the ultrasound. What is an x-ray? An x-ray is a type … Read More “What are medical devices?” »

Educational Professions Licensure-Science Study Guide-Cycle-3 The Science Test for teachers is one of the Professional teacher’s license requirements for science teachers of grades 3 through grade 8. Test Overview Test Name Science Test Number of questions 100 Test Duration  2 hours Format of questions  Multiple Choice questions Test Delivery Computer delivered Test Domains  by percentage … Read More “Educational Professions Licensure-Science Study Guide-Cycle-3” »