## What is a good question for a science project?

These are examples of good science fair project questions: How does water purity affect surface tension? When is the best time to plant soy beans? Which material is the best insulator?

What are some testable questions for science?

Testable: How does changing the shape of a rocket’s fins change its flight? Untestable: What makes a magnet attract things? Testable: Does temperature have an effect on a magnet’s strength? Untestable: What happens when water expands as it freezes?

### Does milk melt faster than water?

You’re right that milk is more dense than water, but this is not why it melts more quickly, although it is indirectly related. The reason that milk is dense is because it contains a lot of impurities – raw milk is about 3.7% fat and 3.2% protein (for Holstein cows; other breeds actually have more).

Does ice melt in milk?

A: Ice will melt more quickly in water because water is less dense than either milk or Hershey’s Syrup. (Milk is about 3% more dense than regular water.) The reason that this matters is the same as for , a question that we’ve actually explained already.

## Does frozen soda melt faster than ice?

Ice melts faster in water than in soda. This is because soda has sodium (salt) in it, and adding sodium makes ice melt more slowly than it will in plain water.

How do you make a rainbow with walking water?

Set your two identical glasses about 2 inches apart. Pour water into one of the cups until it’s halfway full. Add a few drops of your favorite food coloring to the water. Stir the food coloring until the water is one color.

### Does salt float in water?

CONCLUSION: Salt water is heavier than fresh water, so very light things will float in both. Things that are heavy will sink in both. Some things, like soap, are heavier than fresh water and lighter than salt water.

How do you make elephant paste?

Make Elephant Toothpaste Pour 1/2 cup hydrogen peroxide solution, 1/4 cup dishwashing soap, and a few drops of food coloring into the bottle. Swish the bottle around to mix the ingredients. Set the bottle in a sink or outdoors or some other place where you won’t mind getting wet foam everywhere.

## Can elephant toothpaste burn you?

The original elephant toothpaste reaction, which uses a much higher concentration of hydrogen peroxide, can cause both chemical burns and thermal burns. 1﻿ While it produces a larger amount of foam, it’s not safe for kids and should be performed only by an adult using proper safety gear.

What are the best 7th grade science projects to do?

Design a helping hand This is a great individual or group 7th grade science project, as it encourages students to use and hone their design and engineering skills to make a working model of a hand. 6. Watch the greenhouse effect in action

### What should a 7th grader be able to see?

Here are some ideas appropriate for the 7th-grade level. Use a prism to show the spectrum of visible light on a sheet of paper. Mark the endpoints, which is how far into infrared and ultraviolet you can see. Compare your visual range with that of other family members or other students. Is there a difference in range between genders?

What makes a good science fair project?

Science fairs projects are one such kind of learning medium, where the toughest topics can be explained with interesting models and graphical representations. With a little help, any subject can be turned into an eye pleasing science fair project.

## What grade do you do experiments in science?

Parents and teachers still provide direction, especially helping students devise manageable experiments and appropriate work technology to present their results. However, the actual experiment should be done by the 7th grader. The student should record data and analyze it to determine whether or not the hypothesis is supported.