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NOVA - Official Website

NOVA - Official Website
Map of the Human Heart Day and night, the muscles of your heart contract and relax to pump blood throughout your body. In the Step Thru below, see the complicated path the blood takes as it moves in and out of the heart. Step Thru Animation Oxygen-poor blood (shown in blue) flows from the body into the right atrium. Anatomy Do right and left seem backward? aortasuperior vena cavaright atriuminferior vena cavapulmonary valvetricuspid valveright ventriclemitral valveleft ventriclepulmonary arteryaortic valveleft atrium Heart Facts Put your hand on your heart. Hold out your hand and make a fist. Give a tennis ball a good, hard squeeze. The aorta, the largest artery in the body, is almost the diameter of a garden hose. Feel your pulse by placing two fingers at pulse points on your neck or wrists. Your body has about 5.6 liters (6 quarts) of blood. The heart pumps about 1 million barrels of blood during an average lifetime—that's enough to fill more than 3 super tankers. Related:  Science and ICTemilkovac

Zybright | Freebie Library Fun freebies! My Incredible Body is a dynamic anatomy app: just for kids! Fill out the form to the right to get our fun free anatomy activities, which match up perfectly with the content presented in the app. It's a great way to keep kids learning! NEW! Don't have the app? My Incredible Body lets kids investigate, experience, and learn human anatomy in a fun, dynamic new way. Get it now! Human Body, Human Body Information Beyond the Brain What goes on within the human skull is more complex and fantastic than anyone imagined. And scientists are finding ways to delve even deeper into what we know of the mind. Mending Broken Hearts Cheeseburgers, smoking, stress—risk factors for heart disease, a malady reaching global epidemic proportions.

Genes and Appearance In this activity, you will change the way a dragon looks by changing its genes. Introduction How do genes determine appearance? As we all know, dragons are fictional animals, but they work well for learning genetics. Dragons have very few heritable traits, and most of those traits are controlled by single genes with a simple dominant-recessive pattern of inheritance. Dragons do have one example of incomplete dominance; their legs come in three varieties. Observe the dragons above (green, yellow, and purple) and describe the three leg varieties that result from incomplete dominance. Standards NSES Life Science – Reproduction and Heredity Every organism requires a set of instructions for specifying its traits. NSES Life Science – Reproduction and Heredity Hereditary information is contained in genes, located in the chromosomes of each cell. Procedure Below, you will find a picture of a dragon alongside a representation of that dragon’s chromosomes and genes. Collect Data I Collect Data II 1.

Keep Wild Animals Wild Online Activities World Map | Ages 5-7 » Explore the world to learn about how animals are specially suited to live in their habitats. World Map | Ages 8-10 » Discover how the buying and selling of wild animals and their parts (wildlife trade) affects animals around the world. Backyard Naturalist | Ages 5-7 » Wild animals live all around us. Buyer Beware | Ages 8-10 » Be a responsible shopper by thinking carefully about each product you want to buy, and choose products that do not harm wild animals. Helping Wild Animals Stay Wild | Ages 11-14 » There are many ways we can help animals affected by wildlife trade. Southeast Asia Southeast Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia.[1] The region lies on the intersection of geological plates, with heavy seismic and volcanic activity. Southeast Asia consists of two geographic regions: The major religions are Islam, Buddhism and Taoism, followed by Christianity. However, a wide variety of religions are found throughout the region, including Hinduism and many animist-influenced practices.[3] Divisions[edit] A constructed map shows the diversity of every culture in Southeast Asia. Political[edit] Countries[edit] Territories[edit] Location of Southeast Asia[8] Administrative subdivisions of countries[edit] Geographical[edit] Southeast Asia is geographically divided into two subregions, namely Mainland Southeast Asia (or Indochina) and Maritime Southeast Asia (or the similarly defined Malay Archipelago) (Indonesian: Nusantara). History[edit]

Global Climate Change Is the global climate changing? Is the world getting warmer? If you look at the graph below of global temperature changes over the past 150 years, the answer would have to be yes. But what if we look at the past 1,000 years, 100,000 years, or more? The full story is very complicated. We invite you to actively investigate for yourself the facts, concepts, and theories. We hope you can join us in this important mission of learning, understanding, and acting! What do we know about the Earth's climate in the past? Let's start by examining Global Temperature History… How do we know what the temperature of the Earth was like thousands and millions of years ago when there were no thermometers? We can estimate temperature by other means. What determines global temperature? The Earth is heated by the Sun. So why does global temperature change? Carbon dioxide is constantly moving into and out of the atmosphere in a process known as the carbon cycle. What do people have to do with this? What can we do?

Home | Leafsnap: An Electronic Field Guide History of East Timor East Timor is a country in Southeast Asia, officially known as Democratic Republic of Timor-Leste. The country comprises the eastern half of the island of Timor and the nearby islands of Atauro and Jaco. The first inhabitants are thought to be descendant of Australoid and Melanesian peoples. East Timor declared itself independent from Portugal on 28 November 1975, but was invaded by neighboring Indonesia nine days later. Pre-colonial history[edit] The island of Timor was populated as part of the human migrations that have shaped Australasia more generally. Around 3000 BC, a second migration brought Melanesians. The later Timorese were not seafarers, rather they were land focussed peoples who did not make contact with other islands and peoples by sea. Early European explorers report that the island had a number of small chiefdoms or princedoms in the early 16th century. Portuguese rule[edit] Decolonisation, coup, and independence[edit] Parties compete, foreign powers take interest[edit]

Solar System Scope Discovering Gale Crater: A VR experience from the L.A. Times Best experienced over a wifi connection Loading initial data Controls: W / S: Forwards / Backwards A / D: Left / Right R / F: Up / Down Q / E: Roll left / right Up / Down: Pitch up / down Left / Right: Yaw left / right Shift: Speed up By Armand Emamdjomeh Take a virtual reality audio tour of the Gale Crater, including geological features and areas that appear to have been carved by flowing water. Headphones recommended: Take a virtual reality audio tour of the Gale Crater. Now it's your turn to explore Instructions Hold the phone horizontally, tilt and rotate to navigate. Tap to start and stop movement. Use button to start and stop tour Press Go and place phone in virtual reality device once split screen is displayed. W, A, S, D move forward, backwards, left and right. Click feature labels to hear audio. About this project Data was provided by the Mars Science Laboratory at NASA's Jet Propulsion Laboratory. Read about how we created the experience. Audio Narration by Dr. IntroCredits

Indonesia Indonesia ( The Indonesian archipelago has been an important trade region since at least the 7th century, when Srivijaya and then later Majapahit traded with China and India. Local rulers gradually absorbed foreign cultural, religious and political models from the early centuries CE, and Hindu and Buddhist kingdoms flourished. Indonesian history has been influenced by foreign powers drawn to its natural resources. Muslim traders brought the now-dominant Islam, while European powers brought Christianity and fought one another to monopolize trade in the Spice Islands of Maluku during the Age of Discovery. Following three and a half centuries of Dutch colonialism, Indonesia secured its independence after World War II. Indonesia consists of hundreds of distinct native ethnic and linguistic groups. Etymology History A Borobudur ship carved on Borobudur, c. 800 CE. Austronesian peoples, who form the majority of the modern population, migrated to South East Asia from Taiwan.

dichotomous key classification Plant Identification Game Using an Online Interactive Dichotomous Key Introduction: By looking at characteristics of a plant or animal and using a dichotomous key, you can identify most living things to the species. In this situation the term "dichotomous" means to divide into two groups that are not alike and most dichotomous keys work by using the individuals characteristics to place the organism into smaller and smaller groups until it can be identified to the species. Dichotomous keys usually include only certain groups of organisms, like trees or butterflies. This game is intended to introduce you to how a dichotomous key is used. How to play: To begin, choose one of the plant buttons below to open a photo in a new window. The organism is red The organism is not red Lets say the organism is not red, I would click on the " " link and go to the next level of the key. Photo Credit: Hammock photo this page- W. References: Nelson, Gil, 1994. Scurlock, Paul J.,1987. Choose a plant: