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Years and Days

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Title: PowerPoint Presentation Author: Pickerington Ridgeview Junior High School Last modified by: Pickerington Ridgeview Junior High School Created Date – PowerPoint PPT presentation

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Title: Years and Days


1
Years and Days
2
Moon Phases
3
Seasons
4
Lunar Eclipses
Total Solar Eclipse
5
Tides
  • Friction and Gravity (moon and sun)
  • Earth tries to drag the water around with it in
    its daily rotation
  • the Moon and Sun pulls against it.

6
Comparing Comets, Meterites, Astroids
7
Examples of Three Main Galaxy Types
Irregular
Spiral
Elliptical
8
Star Life Cycle
9
Rock Cycle
10
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11
Characteristic Properties of Minerals
  • A mineral is the same all the way through.
  • Color
  • Shiny-ness
  • Fracture pattern
  • Harness
  • Transparency
  • Many others

12
Rocks are combinations of minerals
13
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14
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15
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16
Interior Structure of the Earth
CRUST MANTLE OUTER CORE INNER CORE
17
Plate Boundaries
  • 3 kinds of movement
  • Transform Divergent Convergent

What is geological event is experienced with each
type? What landforms are created by each kind?
18
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19
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20
Types of clouds 1) 2) 3)
21
Isotherms
  • Isotherms are lines drawn to connect places
    having equal temperatures

22
Isobars
  • Isobars - pressure lines drawn on weather maps to
    connect places having equal air pressure.
  • Isobars that are close together indicate a large
    pressure difference over a small area

23
How do weather systems move?
  • Weather systems move across North America from
    west to east.

24
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25
. Steppe
26
Bacterial Reproduction
  • Sexual Reproduction
  • Two bacteria exchanging DNA (conjugation)
  • Does not increase the number of bacteria
  • Asexual Reproduction
  • One bacteria splits into two (fission)
  • Identical cells are produced
  • Happens every 20 minutes for some bacteria

27
Parasitism -
  • Parasites obtain nutrition by feeding on their
    host
  • A parasite usually does not kill its host and is
    usually smaller than the organism on which it
    feeds
  • Deer ticks/Mammals
  • Birds in picture
  • Tape worms/host

28
Mutualism - both animals in relationship benefit
  • Sharks and cleaner fish
  • Clown fish and sea anemone
  • Coevolution of humans and the microbes that live
    in our intestines

29
Commensalism - taking without harming
  • A relationship in which one species benefits and
    the other is not obviously affected
  • Gray whale and barnacles
  • Other examples?

30
Biotic and Abiotic factors
Abiotic factors include such items as weather,
climate, shelter, sunlight and geographic
barriers. Includes all non-living factors.
Biotic factors include the interactions
between members of the same species as well as
interactions with different species - competition
for food, etc. Includes all living factors
31
  • Sexual Reproduction
  • Ensures genetic variability
  • Differences in genetic traits may increase or
    decrease an organisms chance for survival.
  • Remember we are a combination of our parents
    genetics!!
  • 23 chromosomes from your mother and 23
    chromosomes from your father 46 total
    chromosomes.
  • There are 70,368,740,000,000 different possible
    genetics combinations that can occur!!!!

32
This is why siblings may look similar, but no
siblings look exactly the same. (Except
identical twins) All of those 70,368,740,000,000
possible combinations of traits may increase or
decrease your chance of survival.
Notice how all the puppies in this litter look
different despite having the same parents.
33
Asexual reproduction Reproduction (without sex)
that Produces an identical copy of the parent.
The four types of asexual reproduction
are 1)Fission- bacteria reproduce by splitting
in two. 2)Fragmentation- Some animals can grow
from a separate Piece of the parent animal.
(example? __________) 3)Vegatative Propagation-
New plants can be produced from Sections of
parent plants that are cut off.example
____ 4)Budding- Cell division produces a bud
and as it grows it Becomes a identical copy of
its parent example -_____.
34
Asexual Reproduction of Plants
Bulb propagation -each bulb can become a new plant
Budding - each eye can grow a new shoot
35
Vegetative Propagation
Rhizoids - (grasses) modified stems that extend
below the ground
Runners - (strawberries) modified stems that
extend above the ground
36
Sources http//www.pluto.jhuapl.edu/science/every
thing_pluto/15_phasesSeasons.html http//www.hermi
t.org/eclipse/why_lunar.html http//www.hermit.org
/eclipse/why_solar.html http//en.wikipedia.org/wi
ki/Tide http//web.ics.purdue.edu/nowack/geos105/
lect19-dir/lecture19.htm
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