What are the quadrant angles?
Space and AstronomyDefinition A quadrantal angle is an angle in standard position whose terminal ray lies along one of the axes. Examples of quadrantal angles include, 0, π/2 , π , and 3π/ 2. Angles coterminal with these angles are, of course, also quadrantal. How do you find the angle of a quadrant? Video quote: And so
What does a supplementary angle look like?
Space and AstronomySupplementary angles are two angles whose measures add up to 180° . The two angles of a linear pair , like ∠1 and ∠2 in the figure below, are always supplementary. But, two angles need not be adjacent to be supplementary. In the next figure, ∠3 and ∠4 are supplementary, because their measures add to
What’s in the interstellar medium?
Space and AstronomyIn a nutshell, the interstellar medium is the material that fills the space between stars. 99% of the interstellar medium is made up of (mostly hydrogen) gas and the rest is composed of dust. The interstellar medium is vast and expansive in size but very, very low in density. What are the four components of
Why does Mercury have less gravity?
Space and AstronomySince Mercury has less mass than Earth, the surface gravity on Mercury is less than the surface gravity on Earth. The surface gravity on Mercury is only about 38% of the surface gravity on Earth, so if you weigh 100 pounds on Earth, you would weigh only 38 pounds on Mercury. Does Mercury have the
What are the parts of a sundial?
Space and AstronomyAlmost every sundial has two basic parts: the pointer and the dial. The pointer, also called a style or gnomon, casts a shadow, indicating the time of day. The numbered dial is the area in which the shadow falls, showing the hour. What are the main parts of a sundial and how do they work?
How far as a percentage does the radiative zone extend to the photosphere?
Space and AstronomyAbove the core is a region known as the radiative zone—named for the primary mode of transporting energy across it. This region starts at about 25% of the distance to the solar surface and extends up to about 70% of the way to the surface. How far does the radiation zone extend? The radiative zone
How many elements of geometry did Euclid write about?
Space and AstronomyThe Elements (Ancient Greek: Στοιχεῖα Stoikheîa) is a mathematical treatise consisting of 13 books attributed to the ancient Greek mathematician Euclid in Alexandria, Ptolemaic Egypt c. How many Elements did Euclid write about? The thirteen books of Euclid’s Elements BOOK I Triangles, parallels, and area BOOK VI Similar figures and proportions BOOK VII Fundamentals of
How do you find the surface area of a rectangular room?
Space and AstronomyRecord the length and width of every surface in the room. If the room is not perfectly square, then split those surfaces into squares or rectangles, and triangles. Area of a triangle is 1/2 length × width and squares and rectangles’ areas are calculated as length × width. How do you calculate the area for
Why was the international space station built?
Space and AstronomyPurpose. The ISS was originally intended to be a laboratory, observatory, and factory while providing transportation, maintenance, and a low Earth orbit staging base for possible future missions to the Moon, Mars, and asteroids. What is the main purpose of the International Space Station? The primary objective of the ISS is to support scientific research
What are the names of Jupiter’s 79 moons?
Space and AstronomyAstronomers may find more moons around Jupiter in the future. Io, Europa, Ganymede, and Callisto are the largest of Jupiter’s 79 moons. These moons are also known as the Galilean moons. These 4 moons were given this name for the astronomer who discovered them, Galileo Galilei. How many moons does Jupiter have 79? Jupiter has