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Science Fair Project: Judging Tips

By Janice VanCleave

Most science fairs have similar point systems for judging science fair projects. I would instruct judges to consider every project average before even seeing them. Using a scoring system of 1 to 5, with 1 being the lowest point, then 3 would be average. As each judge evaluates a project, he or she decides if […]

Filed Under: Science Projects

Scientific Method: Color Changes

By Janice VanCleave

Research:  Paints contain materials called pigments or colorants. These materials produce colors by reflecting certain colors of light. The three primary colors for paints are Red, Blue, and Yellow. The mixing of any two of these colors produce what are called secondary colors. Red + Blue= Purple Red + Yellow = Orange Blue + Yellow […]

Filed Under: Science Projects Tagged With: colorants, primary colors

Browning Apple: Data Analysis

By Janice VanCleave

How to Create a Comparative Color Scale Your experiment is over and data has been collected. You now want to study your data results and make comparisons between the independent variable and the dependent variable. For the example project, a color scale can be created in order to have quantitative information to describe the results. […]

Filed Under: Science Projects

Browning Apple: Control

By Janice VanCleave

An Experimental Control To conduct a scientific investigation, care must be taken to follow experimental procedures. You must design an experiment to test your hypothesis. When planning your experiment remember to: 1. Keep everything the same except for the single variable being tested, which is the INDEPENDENT VARIABLE:. A variable is something that can be […]

Filed Under: Science Projects Tagged With: brown apple, contol

Browning Apple: Data

By Janice VanCleave

Collecting data is a very important part of your project. As a reminder, DATA is recorded information. It is the results of your experiment. Data for this example project includes your observations of the apple slices. This can be written observation as well as diagrams. Clue:It is difficult to remember exactly how things look when […]

Filed Under: Science Projects Tagged With: science project data

Browning Apple: Hypothesis

By Janice VanCleave

If your science fair project question is: What effect does the type of citric fruit covering apple slices have on their browning ? Your hypothesis will be your idea about the answer to your science fair project question. A hypothesis is basically your educated guess. A hypothesis is your prediction about the results of the […]

Filed Under: Science Projects

Browning Apple: Experiment

By Janice VanCleave

A science fair project experiment must test the accuracy of the hypothesis. For this example science fair project the example question and hypothesis are: Question: What effect does the type of citric fruit covering apple slices have on their browning ? Hypothesis: Since all citric fruits contain citric acid, any kind of citric fruit covering […]

Filed Under: Science Projects

Apple Slice With Star

By Janice VanCleave

Apple Slice Star

Dried apples have unusual, but very interesting characteristics. Discover For Yourself Ask an adult to cut an apple in half, cutting across the apple as shown in the diagram. 1. Allow one-half of the apple to dry. Place the apple piece near a window so that it receives direct sunlight if possible. Place something, such […]

Filed Under: Chemistry Tagged With: craft, dehydration

Browning Apple: Question

By Janice VanCleave

Science Fair Project Question Observation: Sliced apples turn brown. Getting Started: If citric acid in lemons prevents sliced apples from browning, would other types of acid do the same thing? Purpose: To determine if different types of acid prevent sliced apples from turning brown. Two things are changing: 1. Type of acid used—You control this […]

Filed Under: Science Projects

A Camel’s Adaptive Characteristic

By Janice VanCleave

Question: How do animals adapt to their environment? Answer: I do not support the idea that animals purposely change their bodies over time so that they can better adapt to an environment. Instead, I support the idea that animals that have certain physical characteristics are better adaptive to an environment. For Example: Camels can survive […]

Filed Under: animals, Biology Tagged With: adaptations

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Welcome to Janice’s Science Extravaganza!

The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

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