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 Nat. Arbor Day Foundation: Mystery Tree Challenge
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Are the needles attached... SINGLY, each needle attached directly to the twig? If so, GO TO #8. OR In BUNDLES OR CLUSTERS of needles? If so, GO TO #9.
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Are the needles attached... SINGLY, each needle attached directly to the twig? If so, GO TO #8. OR In BUNDLES OR CLUSTERS of needles? If so, GO TO #9.
13 0 http://arborday.org/programs/TreemazeFINAL.pdf#page=13 arborday.org/programs/TreemazeFINAL.pdf#page=13
Are the needles attached... SINGLY, each needle attached directly to the twig? If so, GO TO #8. OR <span class="highlight">In</span> BUNDLES OR <span class="highlight">CLUSTERS</span> of needles? If so, GO TO #9.
18 0 http://arborday.org/programs/TreemazeFINAL.pdf#page=18 arborday.org/programs/TreemazeFINAL.pdf#page=18
Does your tree have... Soft, DECIDUOUS needles growing <span class="highlight">in</span> <span class="highlight">clusters</span> of many needles? (These needles that are shed <span class="highlight">in</span> the fall) If so, GO TO #16. OR EVERGREEN needles that grow <span class="highlight">in</span> bundles of 2-5? These needles stay on the twig through the winter) If so, GO TO #17.
25 0 http://arborday.org/programs/TreemazeFINAL.pdf#page=25 arborday.org/programs/TreemazeFINAL.pdf#page=25
You have a LARCH. Larches have their needles <span class="highlight">in</span> <span class="highlight">clusters</span> of many needles. These soft, needle-like leaves are shed each year <span class="highlight">in</span> the fall so the tree appears bare, except for the cones, through the winter. There are many larch species including the Tamarack (eastern larch), western larch, European larch, and subalpine larch. Please take your tree sample to your teacher and he/she will let you know if you have correctly identified your mystery tree.
Galaxies in Collision
2142. The cluster is six million light years across and contains hundreds of galaxies and enough gas to make a thousand more. It is one of the most massive objects in the universe. Galaxy clusters grow to vast sizes as smaller clusters are pulled inward under the influence of gr...
Imagine the Universe: Dark Matter
called the Milky Way. The Milky Way contains about 100 billion stars. Yes, that's 100,000,000,000 stars! On still larger scales, individual galaxies are concentrated into groups, or what astronomers call clusters of galaxies. An overlay of an optical image of a cluster of galaxies with an...
Chandra will target the age of the Universe
millions of light years across, consisting of hundreds or thousands of galaxies held together by gravity. Mostly clusters have atmospheres of very hot gas that we can see because of the X-rays they emit. Sunyaev and Zeldovich realized that something interesting happens when a CMBR photon pass...
Chemical and Engineering News: November 28, 2005
CO2-To-CO Route Copper boryl complex catalyzes CO2 reduction in well-characterized system. DuPont Accused of Inaction On Fluorochemical Former employee says firm failed to address exposure to compound that breaks down into PFOA. Electron Transfer Clusters of water molecules can fa...
Mineral Gallery: SAINFELDITE
ion group. PHYSICAL CHARACTERISTICS: Color is mostly a pale pink, white or colorless. Luster is vitreous. Transparency: Crystals are transparent to translucent. Crystal System is monoclinic; 2/m Crystal Habits include small prismatic crystals with slanted pinacoidal faces sometimes in r...
PBS: NOVA Online: Galaxies, Clusters, and Superclu
things in the sky). Also in the Local Group are a couple dozen dwarf galaxies. Several of these dwarf galaxies are satellite galaxies, orbiting around the large galaxies. The Milky Way has two prominent satellite galaxies, called the Large and Small Magellanic Clouds. (The Magellanic...
Buckyballs
diamond. Both of these contain extended arrays of carbon atoms. In the new form, the carbon atoms are arranged in relatively small clusters of atoms. In graphite, the carbon atoms are arranged in sheets with the bonds between the atoms forming hexagons, something...
Learning Communities. ERIC Digest.
that is linked with a general education lecture course. Students can choose up to 27 different general education courses. Instructors work together to generate ideas for assignments in the writing class based on the general education course. The community is formed in the small writing...
www.ericdigests.org/2000-1/learning.html
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Cancer Clusters
one of the best known cancer clusters emerged, involving many cases of mesothelioma (a rare cancer of the lining of the chest and abdomen). Researchers traced the development of mesothelioma to exposure to asbestos, a fibrous mineral that was used heavily in shipbuilding during World W...
www.cdc.gov/nceh/clusters/default.htm
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