What is the density of the element mercury? 13.6 g.cm-3 Does Mercury have a high or low density? Although Mercury is small, it’s unusually dense. If we calculate Mercury’s average density by taking its mass and dividing by its volume, we come up with a density of about 5430 kilograms per cubic meter. Any density […]

What are the 2 most important elements of climate are? Climates are classified according to two major factors: elevation and latitude. Why is temperature the most important feature of climate? Meteorologists measure things like air pressure and relative humidity, but the only actual variables of the atmosphere are water content and temperature. Since amount of […]

How did Yellowstone Park come into being? Yellowstone National Park established in 1872. Railroad arrived in 1883, allowing easier visitor access. The US Army managed the park from 1886 through 1918. Automobiles allowed into the park in 1915, making visits easier and more economical. What makes a national park a national park? national park, an […]

What are 4 arachnids? The arachnids (class Arachnida) are an arthropod group that includes spiders, daddy longlegs, scorpions, mites, and ticks as well as lesser-known subgroups. How many types of arachnids are there? This large Class of arthropods includes over 60,000 described species (and most likely a very large number of so-far undescribed ones). Spiders […]

How much water gets wasted in a day? 30 gallons How much does the average person waste water? The average family can waste 180 gallons per week, or 9,400 gallons of water annually, from household leaks. That’s equivalent to the amount of water needed to wash more than 300 loads of laundry. Household leaks can […]

How do elements become stable? Many atoms become stable when their valence shell is filled with electrons or when they satisfy the octet rule (by having eight valence electrons). An atom stabilizes by bonding with another atom in order to fill out its outer set of electrons in its shell. How are elements held together? […]

What liquid corrodes a penny faster? Some people recommend the use of vinegar combined with other ingredients, such as salt, to clean pennies. Interestingly, when combined with other ingredients it can have this effect, but on its own, vinegar will tarnish pennies quickly. Does orange juice clean pennies? Copper oxide dissolves in a mixture of […]

What makes the air warm and air cool? As air heats up and becomes less dense, it rises higher into the air. As it reaches higher elevations, it encounters less air pressure. The lower air pressure at higher elevations allows the air to expand even more. As it continues to expand, it begins to cool. […]

How can we reduce population growth? Reducing population growth Contraception. Abstinence. Reducing infant mortality so that parents do not need to have many children to ensure at least some survive to adulthood. Abortion. Adoption. Changing status of women causing departure from traditional sexual division of labour. Sterilization. In what way does the environment control human […]

What is the apparent path of the sun called? ecliptic What is defined as the apparent path of the sun as viewed on Earth? Ecliptic. The apparent path that the sun traces out against the background stars due to the Earth’s orbit around the Sun. More precisely, the ecliptic is the line formed by the […]