What are the origin of the universe?

What are the origin of the universe? The best-supported theory of our universe’s origin centers on an event known as the big bang. This theory was born of the observation that other galaxies are moving away from our own at great speed in all directions, as if they had all been propelled by an ancient […]

What do plants use to make their own food?

What do plants use to make their own food? The process by which land plants produce their own food using sunlight and carbon dioxide is known as photosynthesis (Figure 1). While carbon dioxide is absorbed by the leaves, the sunlight is captured by a chemical molecule in the plant, called chlorophyll (Chl). All photosynthetic organisms […]

Which is older intrusion or extrusion?

Which is older intrusion or extrusion? Lava that hardens on the surface is called an extrusion. The rock layers below an extrusion are always older than the extrusion. There, the magma cools and hardens into a mass of igneous rock called an intrusion. An intrusion is always younger than the rock layers around and beneath […]

Why is graphite dangerous?

Why is graphite dangerous? Graphite is a form of pure carbon. It is not edible, but not chemically dangerous. Graphite can be made to be more dangerous than Pb depending on ingenuity. For instance if you powder graphite and force a person to breath the powder until they choke, it is more dangerous that a […]

What type of bond is potassium sulfur?

What type of bond is potassium sulfur? ionic bond What is the bond between potassium and sulfur? The difference in charge between the two 1+ potassium ions and the 2- sulfur ion allows electrostatic attraction between the sulfur ions and potassium ions. This is an ionic bond and is the basis of the ionic compound […]

What does a weather station record?

What does a weather station record? These weather stations measure a large variety of different meteorological parameters, including air temperature; atmospheric pressure; rainfall; wind speed and direction, humidity; cloud height and visibility. … Where is the best place to locate a weather station? Ideally mounted at a height of 4 to 6 feet above the […]

What is the most common compound?

What is the most common compound? Glossary Compound Formula Abundance percent by weight Silicon dioxide SiO2 42.86% Magnesium oxide MgO 35.07% Ferrous oxide FeO 8.97% Aluminum oxide Al2O3 6.99% How do you know the difference between a compound and mixture? Compound:a substance that is made up of more than one type of atom bonded together. […]

What are the 4 types of plate boundary?

What are the 4 types of plate boundary? Plate Boundaries and Hotspot Demonstration Divergent Plate Boundary. Volcanic eruptions and shallow earthquakes are common where plates rip apart. Convergent Plate Boundary. Transform Plate Boundary. Hotspot. What are the 5 plate boundaries? What are the major plate tectonic boundaries? Divergent: extensional; the plates move apart. Spreading ridges, […]

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