The+Dollfins

The Doll Fins (Sam, Shannon, & Laura)

__Question:__ What is inquiry teaching? __Answer:__ Inquiry represents the varied ways in which students develop their scientific process skills and their understanding of scientific ideas. Inquiry experiences help develop positive attitudes toward science, scientists, and how the world is studied from a scientific perspective. __Video:__ media type="youtube" key="sLQPXd8BiIA" height="315" width="420"
 * Chapter 1**

__Question:__ What is the purpose of classification? __Answer:__ Classification is used to put objects in order based on common characteristics. It imposes order which makes it easier for kids to break topics down into groups. __Video:__ media type="youtube" key="Knr-fk2PqIQ" height="315" width="560" __Question:__ What skills do students develop during science fairs? __Answer:__ Students develop inquiry learning skills while preparing for their projects that will be displayed in their school science fair. Inquiry skills are developing as students research and investigate their topics for their projects. Students also work on communications and collaboration skills, if working in groups. __Video:__ media type="youtube" key="27TYVmS_KxA" height="315" width="420" __Question:__ What gives muscle energy to move? __Answer:__ The energy to move a muscle comes from a form of sugar. This sugar is called glycogen. Glycogen is found inside a muscle's cell, and about a fourth of the energy released from this sugar goes toward moving muscle. The other three-fourths is released as heat. The faster a muscle is moved, the more heat is produced. __Video:__ media type="youtube" key="RsWNyqnHQ2I" height="315" width="420" __Question:__ How do our arms and legs move in different directions? __Answer:__ A human’s bones are held together by moveable joints. There are six different kinds of moveable joints. Each allow the body part to move a different way. For example, hinged-joints allow humans to bend the elbow, knees, and fingers, which only move in one direction. On the other hand, a ball-and-socket joint allows rotary motion at the shoulder. __Video:__ media type="youtube" key="sBnhWcI4BII" height="315" width="420"
 * Chapter 2**
 * Chapter 3**
 * Human Body Systems**

__**Mammals**__

Question: What do mammals have that you would not find in a different animal group?

Answer: All mammals have some type of fur or hair, are warm-blooded, have milk glands, are internally developed, have interesting teeth, and are the most intelligent of any other animal group.media type="youtube" key="JjbF7v8ASxk" height="315" width="420"

**Current Events!** Current Event-Laura Deakin Why are polar bears considered a threatened species?

Polar bears live in the Arctic and hunt seals and other fatty marine mammals from sea ice. They also travel, mate, and sometimes give birth on the ice. But sea ice is melting as the planet warms, and it is predicted to continue to do so for several more decades. Because polar bears are vulnerable to this loss of habitat, they are likely to become endangered in the future.

http://kids.nationalgeographic.com/kids/stories/animalsnature/polar-bears-threatened/

Current Event- Shannon Sullivan Why is it important that we have seasons?

The Earth's axis is slightly tilted and because of this we have seasons. Without seasons the farther away from the equator people would get, the less likely they would survive the cold, harsh climate. There would be lack of agriculture because of the extremely warm climate where people could actually survive. People would live in smaller sections on Earth and would scrounge for whatever food they could find in the warmer regions. Humans would also be plagued with disease as a result of the year round warm climate. Having a more mild temperatures gives us seasons and saves us from a mast amount of tropical diseases, lack of agriculture, and allows us to live in more regions other than around the equator.

http://www.livescience.com/18972-earth-seasons-tilt.html

Current Event - Sam Pestridge

What causes tornadoes to occur?

Thunderstorms develop in warm, moist air in advance of eastward-moving cold fronts. These thunderstorms often produce large hail, strong winds, and tornadoes. Tornadoes in the winter and early spring are often associated with strong, frontal systems that form in the Central States and move east. Occasionally, large outbreaks of tornadoes occur with this type of weather pattern. Tornadoes occasionally accompany tropical storms and hurricanes that move over land. Tornadoes are most common to the right and ahead of the path of the storm center as it comes onshore.

[|Tornado Information]

**How does magnetism work?**
Magnetism was discovered over 3,000 years ago. Ancient Greeks, Romans, and Chinese found that a special type of rock call magnetite attracted bits of iron. Magnetite is a mineral containing a large amount of iron. Today magnetite is formed during the slow hardening of the earth’s crust, which became magnetized by the earth’s magnetic field, or by becoming subjected to lightening strikes. As a result, magnetite developed a north-seeking and south-seeking pole. Magnets attract and repel each other and other materials. The metals that are attracted to magnets are iron, steel, cobalt, and nickel. The metals magnets repel are brass, aluminum, tin, silver, stainless steel, copper, bronze and gold. Natural magnets, lodestones or leading stones, are made of magnetite. Manufactured magnets are made of steel and magnetized by electricity. Around a magnet is an invisible field of force called a magnetic field. The magnet pulls on any attractable object in the magnetic field. Temporary magnets, are magnets that are made from an iron nail by stroking it in one direction with one pole of a permanent magnet. The magnet increases it’s power by the amount of times it is struck. Another way to make a temporary magnet is by holding a permanent magnet close to an attractable object. The third way to make a temporary magnet is by wrapping an insulated wire around a nail and connecting the two wire ends to a battery. This type of temporary magnet is called an electromagnet. Once the wire is disconnected from the battery, the nail is no longer an effective magnet. A permanent magnet is made by electricity. The steel object is wrapped in wire and attached to a battery or electrical source. The current is applied for a few seconds, and the object is then magnetized permanently!  The earth itself is believed to act like a giant magnet. There are many different ideas of why this might be. One idea is that there are many parts of the earth’s interior that rotate at different speeds. The result is friction strips the electric particles from atoms. This causes an electric current which creates a magnetic field. The earth’s core, which is made out of nickel-iron, is a huge electromagnet buried within the earth.

[|Magnetism]

http://www.youtube.com/watch?v=ak8Bh9Zka50&feature=related