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Does adding salt to water lower its freezing point?
Science Fair Research Project Grade Levels: 7-9 Does adding salt to water lower its freezing point? Frozen Salt Question: Does adding salt to water lower its freezing point? Possible Hypothesis: Adding salt does/does not lower the freezing point of water. Materials: Four 8-ounce plastic cups Measuring cup Box of table salt (sodium chloride) Freezer Thermometer…
Periscope Manual
ByPASKCA periscope lets you see over the top of things, such as fences or walls that you aren’t tall enough to look over. You can also use it to see around corners. People first started using periscopes in submarines in about 1860, to allow the sailors to see above the water. Download Periscope Manual
How to make simple astrolabe "Clinometer "
How to make simple astrolabe, Science Fair Projects Introduction A Simple Astrolabe The astrolabe is an ancient device, long used to measure latitude and act as an aid to navigation. Historians believe that the first astrolabes were devised by the Ancient Greeks, with astronomers such as Apollonius (c. 262 BCE – c. 190 BCE) and…
Do Plants Grow Towards Light: Biology Science Fair Project on Phototropism
Do Plants Grow Towards Light: Biology Science Fair Project on Phototropism Do Plants Grow Towards Light This is a good science fair project that investigates a property of plants known as phototropism: that is, their ability to grow toward light sources wherever they may be. You may be surprised at how clever these plants can…
How to Measure a Light Wavelength with Handmade Spectroscope
Make a Handmade Spectroscope Measure a Light Wavelength! Concept: Light is a kind of wave How Do You Measure a Light Wavelength? Introduction: As you know, light is a kind of electromagnetic waves and its wavelength is 400 nm(Violet)~800nm(Red). T.Young measured the light wavelength for the first time using interference of light by double slits….
How to make Conductivity Tester
How to make Conductivity Tester, Level: Elementary/Secondary Concept: Equipment which can distinguish good conductor from insulator Introduction: Using this equipment, we can check whether a substance is a good conductor or not. There are two types of conductivity tester. One is L-type, which has a LED and it emits light when the test substance is…


