Food chains food web ecological pyramids

High School Statutory Authority: Students shall be awarded one credit for successful completion of this course.

Food chains food web ecological pyramids

Early astronomers believed that Earth was the center of the universe and all other heavenly bodies orbited around Earth. We now know that our sun is the center of our solar system and eight planets, a handful of dwarf planets, named moons, dust, gas, and thousands of asteroids and comets orbit around the sun.

The eight planets sorted by size from largest to smallest are: Mercury is closest to the sun and is a small, heavily cratered planet.

Food chains food web ecological pyramids

Mercury looks like our moon. Venus is second from the sun. It is similar to Earth in size and mass, and has a permanent blanket of clouds that trap so much heat that the temperatures on the surface of Venus are hot enough to melt lead.

Earth is third from the sun. Mars is fourth from the sun. The atmosphere on Mars is thin and there is a vast network of canyons and riverbeds on the red planet. Scientists hypothesize that Mars once supported a wet, warm Earth-like climate.

Jupiter is fifth from the sun. Jupiter is the largest planet in the solar system and is considered a gas giant.


Jupiter has no solid surface. Saturn is sixth from the sun. Early scientists thought Saturn was the only planet with rings, but we now know that all four gas giants Jupiter, Saturn, Uranus, and Neptune have rings Uranus is seventh from the sun. Uranus is a gas giant.

Neptune is eighth from the sun. Neptune appears blue through telescopes and is a gas giant. Many astronomers questioned whether Pluto should be grouped with worlds like Earth and Jupiter. Inthis debate led the International Astronomical Union IAUthe recognized authority in naming heavenly objects, to formally reclassify Pluto.

On August 24,Pluto's status was officially changed from planet to dwarf planet. A new distinct class of objects called "dwarf planets" was identified in It was agreed that "planets" and "dwarf planets" are two distinct classes of objects.

More dwarf planets are expected to be announced by the IAU in the future.

Food chains food web ecological pyramids

What differentiates a dwarf planet from a planet? For the most part, they are identical, but there is one key difference: A dwarf planet has not "cleared the neighborhood" around its orbit, which means it has not become gravitationally dominant and it shares its orbital space with other bodies of a similar size.

Pluto is smaller than seven of the moons in our solar system and cannot be seen without a telescope. The moon revolves around Earth about once every month. Due to its axial tilt, Earth experiences seasons during its revolution around the sun.

The phases of the moon are caused by its position relative to Earth and the sun. The phases of the moon include the new, waxing crescent, first quarter, waxing gibbous, full, waning gibbous, last third quarter, and waning crescent.

The sun is approximately 4. Our moon is a small rocky satellite, having about one-quarter the diameter of Earth and one-eightieth its mass.

It has extremes of temperature, virtually no atmosphere or life, and very little water. Earth is one of eight planets that revolve around the sun and comprise the solar system. Earth, the third planet from the sun, is one of the four terrestrial inner planets. It is about million kilometers from the sun.

Earth is a geologically active planet with a surface that is constantly changing. Unlike the other three inner planets Mercury, Venus, and Marsit has large amounts of life-supporting water and an oxygen-rich atmosphere.An ecological pyramid shows the relative sizes of different components at the various trophic levels of a food chain.

A trophic level refers to each stage (shown as a horizontal bar on ecological pyramids). Learn and research biology, science, chemistry, biology, physics, math, astronomy, electronics, and much more. is your scientific resource and internet science PORTAL to more than 20, science sites.

A food web (or food cycle) is a natural interconnection of food chains and a graphical representation (usually an image) of what-eats-what in an ecological arteensevilla.comr name for food web is consumer-resource arteensevilla.comists can broadly lump all life forms into one of two categories called trophic levels: 1) the autotrophs, and 2) the heterotrophs.

In this lesson, you'll learn about food chains, food webs, and the different roles that organisms play in an ecosystem. You'll also learn about how energy flows through an ecosystem.

The terms food chain and food web both refer to groups of organisms that are dependent on each other for food. A food chain is a single series of organisms in which each plant or animal depends on the organism above or below it. ENERGY PYRAMIDS; FOOD CHAINS.

The organization of communities is based on the utilization of the energy from the sun within a given greatest amount of energy in a community is in the producers.; Within a community, organisms are dependent on the survival of other organisms.

Ecological/Biological pyramids