on April 23, 2022
Is the gradient the maximum rate of change?
Space and AstronomyThe gradient can be interpreted as the “direction and rate of fastest increase“. If at a point p, the gradient of a function of several variables is not the zero vector, the direction of the gradient is the direction of fastest increase of the function at p, and its magnitude is the rate of increase
on April 23, 2022
What happens when a coma approaches the sun?
Space and AstronomyAs comets move close to the Sun, they develop tails of dust and ionized gas. Comets have two main tails, a dust tail and a plasma tail. The dust tail appears whitish-yellow because it is made up of tiny particles — about the size of particles of smoke — that reflect sunlight. What forms a
on April 23, 2022
How do you find the product of a rectangle?
Space and AstronomyWhat is a product of a rectangle? Video quote: So as you know from area a length times width is our area so that's why we can say hey the area as a product would be our length times our width and our area as a sum. How do you find the product? You can
on April 23, 2022
Where is the end of the universe?
Space and AstronomyThe Big Freeze. Astronomers once thought the universe could collapse in a Big Crunch. Now most agree it will end with a Big Freeze. If the expanding universe could not combat the collective inward pull of gravity, it would die in a Big Crunch, like the Big Bang played in reverse. What is the end
on April 23, 2022
What is meant by concave and convex?
Space and AstronomyConcave means “hollowed out or rounded inward” and is easily remembered because these surfaces “cave” in. The opposite is convex meaning “curved or rounded outward.” Both words have been around for centuries but are often mixed up. What is difference between concave mirror and convex? A concave mirror is a spherical mirror with an inwardly
on April 23, 2022
Is a play kitchen worth it?
Space and AstronomyAt best, play kitchens are unnecessary. At worst, they are a distraction from the important work children have a drive to do. They are expensive, they are huge and they breed clutter. Kids don’t need fancy, mini pretend versions of practical tasks. What age is good for a play kitchen? Most kitchens are recommended for
on April 23, 2022
What is a perimeter in math?
Space and AstronomyCCSS.Math: 3.MD.D.8. Perimeter is the distance around the edge of a shape. Learn how to find the perimeter by adding up the side lengths of various shapes. How do you find a perimeter? To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is
on April 23, 2022
Which rigid motion does not preserve orientation?
Space and AstronomyReflectionReflection does not preserve orientation. Dilation (scaling), rotation and translation (shift) do preserve it. Which transformations will not preserve rigid motion? A non-rigid transformation can change the size or shape, or both size and shape, of the preimage. Two transformations, dilation and shear, are non-rigid. The image resulting from the transformation will change its size,
on April 23, 2022
What are scientists that study space called?
Space and AstronomyAn astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy. What is the name of a space
on April 23, 2022
What are alternate angles?
Space and AstronomyDefinition of alternate angle : one of a pair of angles with different vertices and on opposite sides of a transversal at its intersection with two other lines: a : one of a pair of angles inside the two intersected lines. What are the 7 types of angles? In geometry, there are various types of