Flowers and Bees - A Symbiotic Relationship The relationship between bees and flowers is called symbiosis. Symbiosis: A relationship between two organisms in which the organisms benefit from one another. How Bees Benefit Flowers. Bees pollinate flowers, which means they transfer the pollen made by one flower of one plant to the flower of another plant. Bees do not purposely do this. Actually, the bees are trying to collect the pollen to take back to their hives. In the process of going from one flower to another as they collect pollen, some pollen is picked up from one flower and accidentally dropped on another flower. Pollination results in the formation of seeds. In the photo, the bee has pollen covering its whole body. The yellow pollen makes the bee appear to be … [Read more...]
Science Magic: Inertia Learning Activity
Newton's laws of motion describe the relationship between the forces acting on a body and the motion of the body. Newton's First Law of Motion: This law describes inertia, which means a body will stay at rest or continue at a constant velocity unless acted upon by an external unbalanced net force. Example of the inertia of an object at rest: You can remove a paper from beneath a standing clothes pin and the pin will fall into the container beneath it. Discover for Yourself:Place an index card over the mouth of a heavy drinking glass or jar. Stand a clothespin on top of the card so that it is centered over the glass. Quickly and forcefully thump the card straight forward with your finger. You want only to hit the card and you want the card to move in a horizontal … [Read more...]
Night Blindness
DID YOU KNOW? Carrots can help you see the stars! WHAT IS NIGHT BLINDNESS? Light enters your eye and lands on light sensitive cells on the retina (back of the eye). These light receiving cells send signals to your brain where it is decoded and you see images. Visual purple is a most important light receiver, and it is composed of two parts: a protein molecule and a molecule made from vitamin A. People who have a deficiency of vitamin A cannot make enough visual purple to see well at night. This condition is called night blindness. CONCLUSION While carrots and other vegetables, including pumpkin do not contain vitamin A, they have carotene which your liver changes into vitamin A. DISCOVER FOR YOURSELF One way your eyes adjust to the dark is that the pupils dilate (get bigger) so … [Read more...]
