on April 23, 2022
What is the set of all outputs?
Space and AstronomyThe range of a function or relation is the set of all possible dependent values the relation can produce from the domain values. It is the collection of all possible outputs. What is the set of all output values of a function? Recall from your previous algebra classes that the set of all possible input
on April 23, 2022
What is identified on each axis of the Hertzsprung Russell diagram?
Space and AstronomyThese diagrams, called the Hertzsprung-Russell or HR diagrams, plot luminosity in solar units on the Y axis and stellar temperature on the X axis, as shown below. Notice that the scales are not linear. Hot stars inhabit the left hand side of the diagram, cool stars the right hand side. What does the horizontal axis
on April 23, 2022
What do similar triangles have in common?
Space and AstronomySimilar triangles have the same corresponding angle measures and proportional side lengths. What do similar figures have in common? Similar figures have the same shape (but not necessarily the same size) and the following properties: Corresponding sides are proportional. That is, the ratios of the corresponding sides are equal. Corresponding angles are equal. What are
on April 23, 2022
Why is the moon important?
Space and AstronomyThe Latest. The brightest and largest object in our night sky, the Moon makes Earth a more livable planet by moderating our home planet’s wobble on its axis, leading to a relatively stable climate. It also causes tides, creating a rhythm that has guided humans for thousands of years. What would happen without moon? It
on April 23, 2022
Does every solar system have an asteroid belt?
Space and AstronomyFull image and caption New observations from NASA’s Spitzer Space Telescope indicate that the nearest planetary system to our own has two asteroid belts. Our own solar system has just one. Do most solar systems have asteroid belts? The vast majority of asteroids in the solar system are found in a region of the solar
on April 23, 2022
What kind of galaxy is the oldest?
Space and AstronomyThe oldest known galaxy in existence remains GN-z11, which formed around 400 million years after the Big Bang, as previously reported by Live Science’s sister site Space.com. Researchers discovered the ancient galaxy after finding a photo of it in the ALMA archive. Which type of galaxy is the oldest? Elliptical galaxies, such as M87, are
on April 23, 2022
Can three angles be complementary?
Space and AstronomyThree or more angles cannot be complementary even if their sum is 90 degrees. If two angles are complementary, each angle is called “complement” or “complement angle” of the other angle. Two acute angles of a right-angled triangle are complementary. What does it mean when three angles are complementary? Three angles or more angles whose
on April 23, 2022
What is the difference between direct variation and inverse variation?
Space and AstronomyDirect variation occurs when an increase in one variable is results with an increase in value of the other variable. Inverse variation occurs when an increase in one variable is results with a decrease in value of the other variable. How do you tell the difference between direct and inverse variation? For direct variation, use
on April 23, 2022
What are space tethers made of?
Space and AstronomyTethers are usually made of thin strands of high-strength fibers such as Spectra or Kevlar. Any space tethered system is intimately connected to the gravitational force field. Conducting tethers offer the additional capability to interact with the magnetic and electrical force fields. Are space tethers real? Space tethers are long cables which can be used
on April 23, 2022
What are the relationships between the segments in circles?
Space and AstronomyThe first scenario is when you have two secant segments that intersect each other inside the circle. When you have intersecting segments such as these, the relationship is that the product of the segment pieces of one segment is equal to the product of the segment pieces of the other. What is the relationship between