What is the Near Point for Your Vision? The closest distance for distinct, clear vision without straining is called the near point. Discover Your Vision's Near Point Materials: book or page with … [Read more...]
Testing the Strength of Egg Shells
Why hens don't break the eggs they sit on! The secret to hens being able to sit on their eggs without cracking them has to do with their dome-shaped ends. A dome is a three-dimensional arch, … [Read more...]
What is a solid?
Physical Properties of Solids The two types of solids are crystalline solids and amorphous solids. Crystalline Solids The atoms of crystalline solids are tightly bound together in a regular geometric … [Read more...]
Biome: Desert
Biomes are geographical regions identified by their dominant plants, their animals, and a particular climate. A desert is a biome that most people think of as hot and arid (extremely dry), such … [Read more...]
What are Meridians?
Compare and Contrast Longitude and Latitude The model in the "Around" activity below compares Earth's meridians, which are also called lines of longitude. Meridians (lines of longitude) circle the … [Read more...]
Physical Changes of Matter
Use Clip Art for Science Activities Simple but very effective science lessons can be created with clip art. The clip art shown is found on this website: www.clipartlord.com The diagram of the … [Read more...]
What is perception?
Perception is the interpretation of sensory information. Look at the photo shown. You see the different colors because light reflected off of the photo enters your eyes and is absorbed by special … [Read more...]
More About Surface Tension
How many pennies can you add to a glass filled to overflowing with water? What is Surface Tension? The photo shows a penny being added to a glass filled to overflowing with water. Notice how … [Read more...]
What is Surface Tension?
Surface Tension is Due to Cohesive Forces A cohesive force is the attractive forces between similar particles. Liquid molecules have a tendency not to separate because of cohesive forces between. … [Read more...]
Swimming Noodle Science
Use a swimming noodle to demonstrate that light travels in a straight line until it strikes an object. Hold a flashlight at one end of a swimming noodle. Ask a helper to to point the other end … [Read more...]