A hybrid car is a vehicle that uses two or more different power sources to move the vehicle. The most common type of hybrid car uses a gasoline engine and an electric motor. Other types of hybrid cars may use a diesel engine and an electric motor, or a gasoline engine and a fuel cell. […]
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An irrational number is a number that cannot be expressed as a rational number, which is any number that can be written as a fraction p/q where p and q are integers. Some well-known irrational numbers include pi (3.14159…) and e (2.71828…). These numbers are important in mathematics and science because they often pop up […]
A constitution is the fundamental law of a state that outlines the major political principles and establishes the institutions and processes by which government functions. It typically includes provisions for how the government is to be structured and run, as well as individual rights. Constitutions can be written or unwritten, but most modern states have […]
A hypothesis is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot easily be explained by the prevailing scientific theory. When scientists make observations, they sometimes identify patterns in those observations. […]
Alignment occurs when three or more planets line up in a straight line. It can occur in the same sign or in consecutive signs. When this happens, the planets are said to be “in alignment”. Jupiter, Saturn, Mercury, Venus, Mars, and Mars will be in alignment in June 2022. Planet parades are also known as […]
A rational number is a number that can be expressed as a fraction, where both the numerator and denominator are integers. In other words, it is a number that can be written in the form of a ratio. All whole numbers are rational numbers, since they can be expressed as fractions with a denominator of […]
A 401k is a retirement savings account that is offered by many employers. Employees can choose to have a portion of their paycheck automatically deposited into their 401k account. 401ks often have employer matching contributions, which can make them an attractive option for saving for retirement. There are several benefits of a 401k. One benefit […]
An URL is a Uniform Resource Locator and is used to specify the location of a resource on the internet. URLs are commonly used to point to web pages, but can also be used to point to other resources, such as files or images. For example, the URL “https://www.example.com” points to the web page located […]
An earthquake is a sudden, violent shaking of the ground caused by the shifting of rocks deep below the earth’s surface. Earthquakes can occur anywhere in the world at any time, and often cause extensive damage to buildings and other structures. They can also trigger landslides, tsunamis, and other devastating natural disasters.
A solar storm is a disturbance in Earth’s magnetosphere that occurs when there is a sudden release of energy in the form of solar wind and magnetic fields from the sun. This can happen during periods of intense solar activity, such as when there is a large flare or coronal mass ejection. Solar storms can […]