Science

• A planet is an astronomical body that orbits around a star, such as Earth.
• For example, the speed of light in a vacuum, 299,792,458 meters per second, can be written in scientific notation as 2.99792458 x 10^8 m/s.
• The sun is the source of energy that drives all life on Earth.
• In scientific notation, a number is written as the product of a number between 1 and 10 and a power of 10.
• The sun is the largest object in our solar system.
• Scientific notation is a way of expressing very large or very small numbers in a more concise form using powers of 10.
• Energy from the Sun reaches Earth as electromagnetic radiation, including visible light, ultraviolet (UV) rays, and infrared (IR) waves.
• An asteroid is a small rocky object orbiting the Sun.
• Visible light is what we see with our eyes, while UV and IR are invisible to us but can still affect living things.
• The sun is the center of our solar system and provides energy to all living things on Earth through photosynthesis.
• Earth's atmosphere consists mainly of nitrogen (N2) and oxygen (O2), with trace amounts of other gases like carbon dioxide (CO2).
• The formula for calculating the volume of a sphere is V = (4/3) * pi * r^3
• The greenhouse effect occurs when certain gases in the atmosphere trap heat from the Sun, keeping the Earth warm enough to support life.
• The formula for calculating the surface area of a sphere is A = 4 * pi * r^2
• The formula for calculating the circumference of a circle is C = 2 * pi * r
• To convert a number from standard decimal form to scientific notation, move the decimal point until there is only one digit to the left of it (or right if negative).
• Examples include 3.6 x 10^-2 (which equals 0.036) and 2.5 x 10^3 (which equals 250).
• Scientific notation allows us to write very large or small numbers more easily than using standard decimal form.
• In scientific notation, the number is multiplied by 10 raised to a power.
• Scientific notation allows us to express very large or small numbers using exponents.
• The sun provides heat and light to the planets in our solar system.
• The sun provides heat and light to Earth through radiation.
• Examples of scientific notation include writing the number one billion (1,000,000,000) as 1 x 10^9 and the number 0.00000036 as 3.6 x 10^-7.
• The sun has a diameter of approximately 1.3 million kilometers.
• A comet is an icy celestial body that orbits the Sun.
• A number expressed in scientific notation has one digit to the left of the decimal point, which is called the mantissa, and an integer exponent of 10.
• Most of this energy is absorbed by the atmosphere and land surface, while some is reflected back into space.
• Examples of scientific notation include 3.6 x 10^-2 meters, representing 0.036 meters, and 2.5 x 10^3 seconds, representing 2,500 seconds.
• A satellite is any natural or artificial object that revolves around another larger object in space.