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Reflecting Telescope Sources:

Reflecting Telescope Sources:

http://casswww.ucsd.edu/public/tutorial/Reflect.html

http://www.northern-stars.com/reflecting_telescopes.htm

http://library.thinkquest.org/J002040F/refracting_and_reflecting_telescopes.htm

http://www.scopecity.com/reflectors-meade.htm

Reflecting Telescopes:

Reflecting Telescopes are used to view sky objects such as planets, the moon, star clusters, galaxies, nebulae, and multiple star systems.

Components:

Hollow Tube – Provides the structure of the telescope

Glass Lens – Allows source light into the tube

Parabolic Concave Mirror – Reflects source light to focal point

Secondary Flat Mirror – Reflects light at focal point to eyepiece

Eyepiece – Light and image is reflected here

Focuser – Adjusts the focus of the image at eyepiece

Refracting Telescope Sources:

Refracting Telescope Sources:

http://casswww.ucsd.edu/public/tutorial/Telescope.html

http://www.northern-stars.com/refracting_telescopes.htm

http://library.thinkquest.org/J002040F/refracting_and_reflecting_telescopes.htm

http://www.meade.com/support/telewrk.html

http://www.lsstnr.com/FluoriteAdv.htm

Refracting Telescopes:

Refracting telescopes are used to view images of the moon, planets, star clusters and general sky gazing. However, they tend to be smaller in aperture than other types so they are not as good for viewing fainter sky objects such as galaxies and nebulae.

Components:

Hollow Tube – Provides the structure of the telescope

Convex Objective Lens – Bends light source into the tube, and then magnifies

and focuses it at one point.

Eyepiece – The light focused then disperses through this lens

The Twin Keck Telescopes

The Twin Keck Telescopes

http://www2.keck.hawaii.edu:3636/realpublic/gen_info/kiosk/#telescopes

Situated upon the dormant volcano Mauna Kea in Hawaii, the twin Keck Telescopes are the largest reflecting telescopes in the world. The telescopes each have a primary mirror 10 meters in diameter and composed of 36 hexagonal segments that work in complete coordination to form a single piece of reflective glass. The telescopes were made possible by over $140 million funded by the W.M. Keck Foundation. These telescopes are reflection telescopes weighing about 270 tons a piece and are encased in massive domes. Each day, the dome must be chilled by massive air conditioners to prevent warping of the infrastructure due to temperature fluctuations. The telescopes in the domes are kept at below freezing temperatures and are used in shifts of 1-4 nights. Scientists use the Keck Telescopes to seek answers to questions such as:

Sickle-Cell Disease

What is it?

Sickle-Cell Disease is a genetic disorder that affects the blood. People produce an abnormal form of hemoglobin. Sickle-shaped red blood cells cannot carry as much oxygen as normal shaped cells.

 

Describe the Genetics.

 

You would inherit sickle-cell disease from your parents, who may be carriers with the sickle cell trait or parents with the sickle cell disease. In order to inherit the sickle cell hemoglobin, you are born with it and if you inherit one sickle gene, you have the sickle cell trait (meaning that you will produce both normal hemoglobin and abnormal hemoglobin. You will usually not have symptoms of the disease). If you inherit two sickle cell genes, you have the sickle cell disease. The allele for the sickle cell trait is most common in people of African ancestry and the allele for the sickle cell trait is codominant with the normal allele.

multicellular heterotrophs

Locker #349, Per.1
Summary of Science Notes

We are going to go onto a magical and awesome trip into the animal kingdom. Here, we will find animals that are multicellular heterotrophs whose cells lack cell walls. There are two types of phylums for the Animalia Kingdom- vertebrates which have backbones and invertebrates that have no backbone. Within these groups, they share common ancestors. We are going to venture into the far expanses of the creatures sponges and cnidarians, one of the simplest animals.

Matter

September 23, 2003

Period 3

HW Questions

Matter is anything that has mass and takes up space. There are different aspects of matter including boiling and melting temperatures.

Matter can be divided into mixtures and substances. Mixtures contain at least two kinds of matter and there is either a homogeneous mixture or heterogeneous mixture. Homogeneous means that all the samples are the same throughout and heterogeneous means that not all samples are the same. Also, substances include elements and compounds. Elements contain only one type of atom and compounds contain more than one type of atom.

Tables of Offspring Traits

Tables of Offspring Traits

 

Jean

Trait

Phenotype

Genotype

Color

Blue

Bb

Gender

Female (Girl)

XX

Eyes

Square

rr

Nose

Round

tt

Teeth

Pointed

Pp

Feathers

Some

Ff

Ears

Round

Ee

Eyelashes

Straight

Ss

 

Maria

Trait

Phenotype

Genotype

Color

Blue

Bb

Gender

Female (Girl)

XX

Eyes

Square

rr

Nose

Round

tt

Teeth

Square

pp

Feathers

None

ff

The Thirteenth Labor of Hercules

The Thirteenth Labor of Hercules

 

As we all may know, Hercules had performed twelve labors assigned by Eurystheus in Greek mythology, obeying Zeuss will. Now, Zeus has assigned Hercules a thirteenth labor that will take place in Lazar Middle School, in the faraway land called America. First, Hercules would have to travel to Montville, New Jersey from his place at Mount Olympus, for he was immortal by now. Upon his arrival at Lazar Middle School, he would have to be the custodian for a day without his super-human abilities and he couldnt be fired for any reason.

Natural gas is an energy source that is commonly used in homes for cooking, heating, and water heating

Proteins are large organic molecules made of carbon, hydrogen, oxygen, nitrogen, and in some cases, sulfur

Q: What are the two types of Proteins? Explain each.

A: The two types of proteins are incomplete proteins and complete proteins. Incomplete proteins are found in foods from plants. Such foods do no contain all the essential amino acids. On the other hand, complete proteins are found in food that comes from animals. They contain all nine of the essential amino acids.

 

An enzyme is a type of protein that speeds up a chemical reaction in a living thing. Without enzymes, many chemical reactions that are necessary for life would either take too long, or not occur at all. For example, enzymes in your saliva speed up the digestion of food by breaking down starches into sugars in your mouth.