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Didactalia: material educativo > 12-14 anos

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The Effect of Humidity and Temperature on Percussive Pitch

The purpose of this project is to quantify the effect of weather- in this case temperature and humidity- on musical instruments. All musicians know that the environment affects the tone of the instrum ...

Measuring Sugar in Fruit Using a Refractometer

Students will learn about circadian rhythms. Library research will show many biological activities that occur on a 24 hour clock. Experimental research will show the circadian rhythms of exercise in s ...

Tracking Acidity in Rain Water

In this experiment, we will explore patterns of acidity in rain water.It is an educational content by education.com.By clicking on the title of this resource, you will be redirected to the content. If ...

Will Refrigerating Cosmetics Extend Their Longevity?

Find out whether refrigerating cosmetics will extend their shelflife and longevity.Research QuestionsIt is an educational content by education.com.By clicking on the title of this resource, you will b ...

Tumbling Rocks!

Tumbling is a technique used for smoothing and polishing a rough surface on small particles. Professional rock polishers help jewelers polish stones by imitating the abrasion of rocks in nature. The n ...

Salinity & Water Density

Cold water is denser than warm water. Water with a high salt concentration (salinity) is denser than water that has a lower salt concentration. Warmwater rises above densercolder water, and bodies of ...

How Fast Does a Seismic Wave Travel?

Seismic waves travel through the earth during an earthquake. They occur when stress at a plate or other regions on the earth is released. Waves that travel through the crust are called surface waves. ...

The Effect of Caffeine on the Heart Rate of Daphnia Magna

Daphnia, otherwise known as water fleas, have a circulatory system similar to mammals. Most importantly, they have a chambered heart, which can be seen beating under a microscope. With a stopwatch and ...

Measuring Sugar in Fruit Using a Refractometer

Students will learn how astringent, mealy, hard fruits become sweet, soft, and aromatic. Through research work, they will learn about the ripening process. Through experimental work, they will analyze ...

Scare Crow

Hipervinculo Biología

Scare Crow

Determine how well a distressed bird call keeps birds away from crops.It is an educational content by education.com.By clicking on the title of this resource, you will be redirected to the content. If ...

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