by STAO ADMIN | Nov 12, 2019
There are eight planets in the solar system in two distinct groupings. The four inner terrestrial planets (Mercury, Venus, Earth, and Mars) are very small and relatively close together. The outer planets or gas giants (Jupiter, Saturn, Uranus, and Neptune) are very...
by STAO ADMIN | Nov 12, 2019
The Moon is visible at some point during most nights. If you observed the Moon from one night to the next you would notice that the Moon rises 50 min later each night. With close observation you would see a little bit more or a little bit less of the Moon each night,...
by STAO ADMIN | Nov 12, 2019
Burning fossil fuels releases carbon dioxide, CO2(g), which contributes to the greenhouse effect and hence to climate change. Burning some fossil fuels also releases nitrogen oxides and sulfur dioxides. These gases react with moisture in the air to produce acid...
by STAO ADMIN | Nov 12, 2019
We are most accustomed to making observations directly with our eyes. Students therefore often find it conceptually challenging to comprehend the reasoning and logic used by scientists studying atoms that they cannot directly see. This activity allows the students to...
by STAO ADMIN | Nov 12, 2019
In this activity, student mix a given quantity of salt with a fixed volume of water. Mass and volume measurements are made before and after mixing to determine if these quantities change. Students observe that mass is conserved during dissolving while volume is...
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