When you look up at the night sky you see the brightest stars in our universe. They are all different sizes and distances from us. Stars are celestial bodies made mostly of hydrogen and helium. They produce heat and light […]
Our solar system is located on an outer spiral of the Milky Way. It includes 1 star, 8 planets, moons, dwarf planets and millions of asteroids, comets and meteorites. In this lesson, students will learn the origins of both our […]
Planets orbit the Sun and moons orbit the planets. Our Moon is the Earth’s only satellite. It is the largest and brightest object in our sky and the 5th largest moon in our solar system. You cannot look at the […]
Space exploration uses the fields of astronomy and technology to explore our solar system and beyond. Technology ranges from unmanned space probes to manned rocket and shuttle missions. In 1957, Sputnik was launched into outer space. This was the first […]
The cell is fundamental to the living systems of biology. All organisms are made of cells. The cell is considered the basic unit of structure and function. Understanding cellular function is vital in understanding tissue, organ and body function. Many […]
The chloroplast in photosynthetic organisms like plants capture light energy from the sun. They then convert this light energy to chemical energy that is stored in sugar. This process of light conversion is called photosynthesis. This process of photosynthesis nourishes […]
All living things require energy to metabolize and survive. The First Law of Thermodynamics says that energy cannot be created or destroyed. It can however, be transferred or transformed. In a process known as cellular respiration, the mitochondria within a […]
Marie Curie was a pioneer in the study of radiation. Her discovery that radioactive particles were being emitted from the uranium atom led to the discovery of subatomic particles, defying the idea that the atom was indivisible. In addition, her […]
Electrons jump around within an atom as they either gain or lose energy. When an electron is hit by a photon of light for example, it absorbs the energy the photon was carrying and moves to a higher energy state. […]
An atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms combine to form molecules, which then interact to form solids, gases, or liquids. Atoms consist of three basic particles: protons, electrons, […]
Matter is anything that has mass and takes up space. Chemistry is the study of matter and all of the changes that matter goes through. Everything around you is matter. Therefore, chemistry is all around you! To understand changes that […]
Differences in animal body plans mark branching points in evolutionary trees. In this comparative anatomy lesson students will look at the basic body plans in 5 animal specimens: the squid, the starfish, the dogfish, the pig, and the cat. Students […]
