3 types of tectonics plate

1. I. 3 TYPES OF TECTONICS PLATE
1. divergent boundary
 A divergent boundary occurs when two tectonic plates move
away from each other. Along these boundaries, lava spews
from long fissures and geysers spurt superheated water.
Frequent earthquakes strike along the rift. Beneath the
rift, magma—molten rock—rises from the mantle. It oozes up
into the gap and hardens into solid rock, forming new crust
on the torn edges of the plates. Magma from the mantle
solidifies into basalt, a dark, dense rock that underlies
the ocean floor. Thus at divergent boundaries, oceanic
crust, made of basalt, is created.

2. 2. Convergent boundary
 In plate tectonics, a convergent boundary, also known as
a destructive plate boundary, is a region of active
deformation where two or more tectonic plates or fragments
of the lithosphere are near the end of their life cycle.
This is in contrast to a constructive plate boundary (also
known as a mid-ocean ridge or spreading center). As a
result of pressure, friction, and plate material melting in
the mantle, earthquakes and volcanoes are common near
destructive boundaries, where subduction zones or an area
of continental collision (depending on the nature of the
plates involved) occurs. The subducting plate in a
subduction zone is normally oceanic crust, and moves
beneath the other plate, which can be made of either
oceanic or continental crust. During collisions between two
continental plates, large mountain ranges, such as
theHimalayas are formed. In other regions, a divergent
boundary or transform faults may be present.


3. 3. transform plate boundary
 Transform Plate Boundaries are locations where two plates
slide past one another. The fracture zone that forms a
transform plate boundary is known as a transform fault.
Most transform faults are found in the ocean basin and
connect offsets in the mid-ocean ridges. A smaller number
connect mid-ocean ridges and subduction zones.

4. II. SCIENCE TRIVIA
Science Trivia about moon
The footprints made the by astronauts when they walked on the
Moon will remain for centuries. There is no wind or erosion on
the Moon to disturb the footprints. Astronauts did notice a
small about of dust rising from the surface of the Moon. NASA
has sent a space ship to study the thin atmosphere on the Moon
named LADEE. Click on this link to find out more about the
mission.
Footprints of astronauts on the Moon, NASA
The brain is an extremely complicated organ. Scientists are
continually studying the brain to learn more about how it
functions. Nerves from around the body bring information to the
brain. The information is stored in the brain as memory. There
are hundreds of billions of nerve cells in the body that send
messages to the brain that contains 100 billion nerve cells.
Sound is kinetic energy because the waves involve motion. Sounds
can be soft or loud depending on the energy and frequency of the
sound waves. The pitch of a sound depends on the number of waves
that reach your ears every second. The greater the number of
waves per second the higher the pitch.

5. Satellites are now used to make very detailed maps. They provide
pictures of remote areas that are difficult for map makers to
visit. The satellites are so sensitive them can discover when
molten rock beneath a volcano is causing the summit to inflate
prior to an eruption. Satellites are also tracking the movement
of tectonic plates. They are able to determine the speed the
plates are coming together, moving apart and slipping past each
other.
miles (22,530 km) from Earth. Now it’s more than 280,000 miles
(450,000 km) away. The moon looked three times larger when it
was closer to Earth.
from less than -200° F to more than 200° F.
Called the South Pole-Aitken, this giant crater is on the far
side of the moon and is 1,550 miles (2,500 km) in diameter. The
largest crater visible to Earth (on the near side of the moon)
is the Bailly Crater, with a 183-mile diameter.
les (3,475 km), roughly four
times smaller than Earth’s, which is 7,926 miles (12,756 km).[3]
once around Earth in 24 hours and 50 minutes. That’s the time of
one moonrise to the next.
n’s gravity has slowed the speed of Earth’s rotation.
Long ago, it was much faster and days were much shorter.[6]
Apollo missions from 1969 to 1972.
I think we're going to the moon because it's in the nature of
the human being to face challenges. It's by the nature of his
deep inner soul . . . we're required to do these things just as
salmon swim upstream.
- Neil Armstrong
pounds (385 kg) of the moon.
400 times closer to Earth—so from Earth, the moon and the sun
look about the same size.

6. EARTH TRIVIA
1 You are at the Kennedy Space Center, sitting in your rocket,
ready to launch. You look out the window and view the sky. You
are currently sitting at the lowest level of the atmosphere.
What is this level called?
Answer: The troposphere is the lowest level of Earth's
atmosphere. Approximately 75 percent of the atmosphere's mass is
situated here. A majority of the Earth's weather activity occurs
within the troposphere. Air temperature and pressure decrease as
you get higher into the troposphere. The troposphere extends
from sea level with varying heights depending on the climate
region you're in.
2 Starting off, we have an observation that everyone is familiar
with: the Earth has a day-night cycle. Every twenty-four hours
there is a light period and a dark period (with a few exceptions
if you live very far north or south). Why do we have a day-night
cycle on Earth?
Answer: Almost everything in the universe, from the largest
suns to the smallest particles, is spinning. The Earth is no
exception. If we looked down at the Earth from above the North
Pole, we would see it spinning counter clockwise. This is why
the sun rises in the east and sets in the west. If the Earth
were spinning the opposite way, the direction the sun travels
across the sky would also be reversed.
3 About 75,000 years ago, Mt. Rainer reached its maximum height.
In which geological period did that occur?
Answer: The Pleistocene Period reaches back in time nearly
two million years. The Pliocene Period was about 2-10 million
years ago, the Miocene approximately 13-16 million, and the
Eocene roughly 40-50 million. In 2014 the summit of Mt. Rainer
was measured at 14,411 feet, down from the more than 16,000 feet
75,000 years ago. In 1899, Mt. Rainier became the fifth national
park in the United States, and in 2014 had over two million
visitors.
4 In 2008, India launched the Moon Impact Probe, becoming the
fifth nation to reach the moon. The probe burrowed deep into the
lunar pole. What did it find?
Answer: The MIP provided the first conclusive proof of
water on the moon. It was a major victory for India in its space
race with China, and it also arrived at the moon shortly before
a similar NASA mission. Costing only 58 million dollars, it has

7. been hailed as one of the most cost-effective lunar exploration
programs in history.
5 A logical place to begin looking at the earth's cooling might
be to study a bit about the Ice Age. Who was the German botanist
who first coined the term, "Ice Age", in 1837 as a reference to
a theory about the cooling of the earth?
Answer: Karl Friedrich Schimper discussed his findings and
theories with a contemporary, Louis Agassiz, who later published
the theories and related works and claimed them as his own
ideas. Schimper, however, was the man who first coined the term
"Ice Age."
6 Different parts of the world experience a different number of
tides each day. The most common cycle is two highs and two lows
each day. What is this type of tide cycle called?
Answer: Semi-diurnal is two lows and two highs per day,
usually of equal height. If the like tides are of unequal
height, that's known as a "mixed" tide.
7 Corporal Slag was pleased that he was able to identify the
volcanic rock rhyolite. Which other igneous rock shares the same
chemical composition as rhyolite?
Answer: Rhyolite is an extrusive igneous rock formed by the
rapid cooling of lava on the earth's surface. When the same lava
(known as magma when found within the earth) cools and forms
rocks within the earth's crust, it forms granite. Both rocks
have a higher amount of silica and lesser amount of iron and
magnesium.
8 Which dissolved gas is essential to most life in our rivers?
Answer: Oxygen is required by almost all organisms (e.g.
mammals, fish, invertebrates) for respiration. Some bacteria
actually thrive in oxygen-free conditions.
9 What metallic element gives the brilliant red and green color
to rubies and emeralds?
Answer: Chromium, is considered an impurity in Aluminum
oxide (Corundum) and Beryllium aluminosilicate (Beryl). However,
it gives these gemstones their attractive shades of red and
green, respectively. Don't we just adore Dorothy in Chromium
Beryllium Silicate City wearing her Chromium aluminium oxide
slippers.

8. 10 What is the name of the only large landmass (super continent)
to be found in the Triassic, before breaking up during the
Jurassic period?
Answer: Pangea was the only continent on the Earth from the
late Carboniferous time period until the early - mid Jurassic
time period, when it started to break up and slowly form the
continents we have today.
III. 9 superstitious belief and practices about eclipse
1. A Fire Dog Trying to Steal the Sun
A Korean belief held that an eclipse occurred when fire dogs
attempted to steal the sun or the moon. According to legend, a
mythical king ordered these dogs to attempt to grab hold of the
hot sun or the freezing moon. Although, it's a fruitless task,
the attempt (or, the bite) blots out the sun or the moon for a
short period of time.
2. A Demon Caught Stealing
According to Hindu legend, an eclipse is caused by the Hindu
demon Rahu. In an attempt to steal a magical elixir that grants
immortality, he is caught by the sun and the moon who report the
crime to the god Vishnu who is able to cut off Rahu's head
before he swallows the elixir into the rest of his body. But the
separation renders his head immortal even as the body dies. An
eclipse is the result of Rahu's immortal head forever chasing
the sun and the moon out of revenge. Unfortunately, without a
body, every time he catches them and swallows them, they fall
out the back of his throat again.
3. A Warning to Sinners
According to the Romans, an eclipse was the result of human sins
and was a warning sent to all humans. Eclipses were viewed as
bad omens, warning of trouble on the horizon.
4. A Fight Between the Sun and the Moon
The Batammaliba people in Togo and Benin believe that the sun
and the moon are in a fight during an eclipse and it is up to
harmonious people to fix this fight. In other words, the eclipse
is a time to come together and find peace in order to help the
sun and the moon.
5. A Balance in the Universe
The Navajo believed the eclipse was about bringing balance to
the universe. Therefore, it was a time of reflection. Families
got together and played games and sang special songs. They also

9. fasted. They also knew not to look at it, believing that a
person who looks at the sun goes out of balance with the
universe.
6. A Danger to Pregnant Women
This is a myth that persists to today. There is no basis in
fact, but many pregnant women worry an eclipse will harm their
unborn baby.
7. A Hungry Frog or Toad
The Vietnamese once believed that an eclipse was a frog or a
toad devouring the sun. The earliest word for eclipse in Chinese
is shih, which means "to eat."
8. A Dangerous Air
In India, people fasted for 12 hours during an eclipse to avoid
the air they perceived as being poisonous. They didn't eat or
engage in dangerous activities. There was also quite a bit of
prayer.
9. A Candle Will Bring Back the Sun
In Mesopotamia, they would light candles to bring back the sun
fire when there was an eclipse, believing that they had the
power to bring it back to life.