Is Magma more dense than the crust? In fact, it can get so hot that the rocks that make up the crust can actually begin to melt. This molten material is called magma. It is less dense than the surrounding rock so it tends to move upwards through the crust. Magma also comes from material […]
What is the purpose of an exhaust valve?
What is the purpose of an exhaust valve? An exhaust valve is a valve that releases burned gases from a cylinder. The exhaust valve closes during the initial part of the induction stroke. The inlet valve usually opens a little before top dead center and the exhaust valve remains open a little after top dead […]
What is the most dangerous UV radiation?
What is the group number are these metals reactive?
What is the group number are these metals reactive? The alkali metals, found in group 1 of the periodic table (formerly known as group IA), are very reactive metals that do not occur freely in nature. These metals have only one electron in their outer shell. Therefore, they are ready to lose that one electron […]
How can I be expert in English grammar?
How can I be expert in English grammar? 5 Simple ways to improve your written English Expand your vocabulary. To express yourself clearly, you need a good active vocabulary. Master English spelling. You must know how to spell those words correctly. Read regularly. People often say that we learn to write best by reading. Improve […]
What is the meaning of condensation nuclei?
What is the meaning of condensation nuclei? Condensation nucleus, tiny suspended particle, either solid or liquid, upon which water vapour condensation begins in the atmosphere. What are the two types of condensation nuclei? There are two broad categories of condensation nuclei: hygroscopic and hydrophobic. Hygroscopic nuclei are “water seeking” nuclei. Is smoke a condensation nuclei? […]
What are two examples of secondary energy sources?
What are two examples of secondary energy sources? Some examples of secondary energy resources include petroleum products, manufactured solid fuels and gases, electricity and heat, biofuels, and any other product made from primary resources. What are primary intermediate and secondary sources of energy? Secondary electricity is produced from heat of nuclear fission of nuclear fuels, […]
Does a 30-minute walk count as exercise?
Does a 30-minute walk count as exercise? The Centers for Disease Control and Prevention (CDC) recommends 150 minutes or more of moderate-intensity physical activity, or 75 minutes or more of vigorous-intensity activity each week for overall health and disease risk reduction. Based on this guideline, you could do five brisk 30-minute walks a week. What […]
Why do gyres move clockwise?
Why do gyres move clockwise? The Earth’s rotation deflects, or changes the direction of, these wind-driven currents. This deflection is a part of the Coriolis effect. The Coriolis effect shifts surface currents by angles of about 45 degrees. In the Northern Hemisphere, ocean currents are deflected to the right, in a clockwise motion. Is gyre […]
What spot has the most geysers on Earth?
What spot has the most geysers on Earth? Yellowstone National Park What is the No 1 cause of death in national parks? Drowning What 5 states have no national parks? States without National Parks are: Alabama, Connecticut, Delaware, Georgia, Idaho (see above,) Illinois, Iowa, Kansas, Louisiana, Maryland, Massachusetts, Mississippi, Nebraska, New Hampshire, New Jersey, New […]