Solar-tracking, or heliotropic, flowers are common where the air is often cool and the growing season is short. The snow buttercup, arctic poppy and other bowl-shaped heliotropic flowers collect energy from sunlight and heat up. The temperature inside the bowl of these flowers can become as much as fourteen degrees Fahrenheit warmer than the air […]
Periodic Table Groups
The Periodic Table of Elements is arranged so that elements in groups have similar properties. The valence electrons for Groups 1, 2, 13, 14, 15, 16, 17, and 18 are easily to determine. Groups 1 and 2 The valence electrons for Groups 1 and Group 2 are equal to the group number.In other words, Valence […]
Calendar:Periodic Table of Days
Things that repeat according to a pattern are said to be periodic. On a calendar, days are in numerical order in columns (up and down). Each Column (vertical group) is for the same day of the week. Every seventh day falls on the same day. Thus, the dates for the same day of the week […]
Viscosity
LIQUIDS FLOW Because liquid particles can move past each other, they can flow. This is very important when transporting liquids from one place to another through pipes or water ways. VISCOSITY is a measure of the resistance of a liquid to flowing. The viscosity of a liquid increases as the temperature of a liquid decreases. […]
Chlelate: Chlorophyll
Chlorophyll is an organic molecule. The basic organic molecule is composed of carbon and hydrogen. More complex organic compounds contain carbon, hydrogen, and other elements such as oxygen and nitrogen. A chelate is an organic compound with a central metal ion. Chlorophyll is one of the most important chelates in nature. In the diagram, the […]
Cloning: Dolly
Why was the cloned sheep called Dolly named after the Country Western Singer, Dolly Parton? The cells used to clone Dolly came from the breasts of Dolly’s mother. Dolly Parton is known for her large breast, so the scientists named the cloned sheep Dolly. More Information about Dolly Dolly was born July 5, 1996 at […]
Musical Bottles
Using bottles to make music is fun for kids of all ages. The best presentation I’ve heard were seniors who played “Lean on Me” and along with the music from the various bottles, one student added a drum beat by tapping on the lab table. It really was awesome–too long ago for me to have […]
Floating Ball
Science has a magical appeal for children. While they are entertained by science demonstrations, nothing is as captivating as something they can do themselves. The best TEACHING TIP I have for club directors is to support and encourage children’s inborn gift of curiosity One way is to explore the fun of science TOGETHER. Instead of […]
Mass: Equal-Arm Balance
Matter is anything that has mass and takes up space. Mass is defined as the amount of matter that an object is made of. YIKES! Matter has mass and mass is made of matter! This doesn’t tell me what these terms mean. UUM!! For now, let’s say that mass is the amount of STUFF that […]
Using Inertia to Measure Mass
What is Newton’s First Law of Motion? Newton’s first law of motion is about inertia. While this might sound technical, it’s not. Inertia is a characteristic of an object’s state of motion. Well, this doesn’t sound very easy, so let me try again. Actually, I am writing this so that a special technical reviewer, […]
- « Previous Page
- 1
- …
- 28
- 29
- 30
- 31
- 32
- …
- 96
- Next Page »