A sphere is a three-dimensional shape that is perfectly round, with all points on its surface equidistant from its center. It is a type of round geometric shape that is similar to a ball. The surface area of a sphere is 4πr^{2}, where r is the radius of the sphere, and the volume of a sphere is (4/3)πr^{3}.

**Surface Area:**The total area of the outer surface of a sphere is given by the formula 4πr^{2}, where r is the radius of the sphere.**Volume:**The space occupied by a sphere is given by the formula (4/3)πr^{3}, where r is the radius of the sphere.**Center:**The center of a sphere is the point inside the sphere that is equidistant from all points on the surface.**Diameter:**The distance across a sphere through its center, which is twice the length of the radius.**Circumference:**The distance around the outer edge of the sphere is not defined, as a sphere does not have edges or corners.

- What is a sphere?
- What is the formula for the surface area of a sphere?
- What is the formula for the volume of a sphere?
- What is the center of a sphere?
- What is the diameter of a sphere?
- Is the circumference of a sphere defined? Why or why not?

Understanding the properties of a sphere and being able to calculate its surface area and volume is important in various fields such as mathematics, physics, and engineering.

.Study GuideThe sun and earth Activity LessonThe Sun & Earth Worksheet/Answer key

The sun and earth Worksheet/Answer key

The sun and earth Worksheet/Answer key

The sun and earth Worksheet/Answer keyThe Sun and Earth Vocabulary/Answer key

The sun and earth

Concepts of Earth Science: A student should understand and be able to apply the concepts, processes, theories, models, evidence, and systems of earth and space sciences. A student who meets the content standard should:

Develop an understanding of the cyclical changes controlled by energy from the sun and by Earth's position and motion in our solar system.