What is the color of luster? Luster describes the reflection of light off a mineral’s surface. Mineralogists have special terms to describe luster. One simple way to classify luster is based on whether the mineral is metallic or non-metallic. Minerals that are opaque and shiny, such as pyrite, have a metallic luster. How many types […]
Does rising air warm or cool?
Does rising air warm or cool? Rising air always cools, and, conversely, sinking air always warms. This type of temperature change, which is caused simply by ascent or descent in the atmosphere, is called adiabatic cooling or warming. When air moves vertically, its pressure changes. What causes the air mass to cool what happens to […]
How many appliances can be on a 20 amp circuit?
How many appliances can be on a 20 amp circuit? A 20 Amp breaker can handle up to 2,400 Watts. Many of the breakers you see in the panel run entire rooms. This includes things like standard outlets and built-in lighting systems. Though there are some breakers that are set up to handle one single […]
What is the best example of specialization?
What is the best example of specialization? When an economy can specialize in production, it benefits from international trade. If, for example, a country can produce bananas at a lower cost than oranges, it can choose to specialize and dedicate all its resources to the production of bananas, using some of them to trade for […]
What can you spray on windows to stop condensation?
What can you spray on windows to stop condensation? Clean up troublesome mold and mildew caused by winter window condensation with Wet & Forget Indoor Mold+Mildew Disinfectant Cleaner. Wet & Forget Indoor is an easy-to-use, one-step spray that cleans, deodorizes, and disinfects window glass, sills and frames. Just spray the surface, wait 10 minutes, and […]
Who invented electric iron?
What happens when the moon and sun are at right angles from each other?
What is the rarest type of eclipse?
What is the rarest type of eclipse? Just 9 hours later, the Moon will pass perfectly between the Earth and the Sun, creating an annular solar eclipse for a myriad of observers across Africa and Asia. It’s an incredibly rare occurrence to have a solstice solar eclipse, but there’s a good reason for it this […]
In which part of the digestive system does digestion start?
In which part of the digestive system does digestion start? Digestion begins in the mouth, well before food reaches the stomach. When we see, smell, taste, or even imagine a tasty meal, our salivary glands in front of the ear, under the tongue, and near the lower jaw begin making saliva (spit). As the teeth […]
Which statement best describes the flow of energy and the movement of chemical compounds in an ecosystem?
Which statement best describes the flow of energy and the movement of chemical compounds in an ecosystem? Which statement best describes the flow of energy and the movement of chemical compounds in an ecosystem? Energy is transferred from organisms in a food chain and chemical compounds are recycled. Which statement best describes how matter moves […]