All Facts


Warning: Missing argument 2 for wpdb::prepare(), called in /home/sciencef/public_html/wp-content/plugins/c9-community-publishing/c9cp-admin-functions.php on line 1151 and defined in /home/sciencef/public_html/wp-includes/wp-db.php on line 1292
user
Posted by Science Facts on 21st September 2008

Fact: High Speed Avalanches

Although an avalanche can mean the fall of any material e.g. snow, soil and even rocks, in common usage it generally refers to a falling mass of ice and snow which breaks away from the side of a mountain or cliff and surges down at great speed.

So how fast do they really travel ? Well a dry snow avalanche can travel at speeds of up to 225 mph with a force equaling that of a hurricane. What’s more interesting is that as the powdery snow hurtles downhill a further blast of air just as destructive may be sent out ahead of the avalanche. Wet snow avalanches on the other hand travel much slower at around 20 mph, this however doesn’t make them any less deadly.

The greatest avalanches recorded tend to occur on the high mountains of the Himalayas however those which cause the highest death toll fall in the populated valleys of the Alps.


Warning: Missing argument 2 for wpdb::prepare(), called in /home/sciencef/public_html/wp-content/plugins/c9-community-publishing/c9cp-admin-functions.php on line 1151 and defined in /home/sciencef/public_html/wp-includes/wp-db.php on line 1292
user
Posted by Science Facts on 21st September 2008

Fact: Preserve Your Body In Ice Like Otzi

Did you know that under extreme cold the human body can be preserved over 1000’s of years. A great example of this was during September 1991 when hikers in the Otztal Alps came across the body of a man who turned out to be over 5000 years old. He was preserved in an airtight pocket beneath a huge glacier which ultimately stopped his body from decaying in the normal manner.

Not only were many of his organs still intact but he was still wearing a boot stuffed with grass. Bodies caught in glaciers are usually crushed and torn apart so the fact that this body was so well preserved was an amazing feat in itself. How he froze over is of course an area up for debate with some scientists claiming he was caught in an ice storm whilst others went as far as claiming he was a killed and offered as a ritual sacrifice. There’s plenty about Otzi on the web so dig around and find out more for yourself.


Warning: Missing argument 2 for wpdb::prepare(), called in /home/sciencef/public_html/wp-content/plugins/c9-community-publishing/c9cp-admin-functions.php on line 1151 and defined in /home/sciencef/public_html/wp-includes/wp-db.php on line 1292
user
Posted by Science Facts on 17th September 2008

Fact: What Are Earthquakes ?

earthquake crack in road

Earthquakes like hurricanes are not only super destructive forces but continue to remain a mystery in terms of how to predict and anticipate them. To understand the level of destruction associated with earthquakes you really need to look at some examples of the past.

If we go back to the 27th July 1976 in Tangshan, China, a huge earthquake racked up an official death toll of 255,000 people. In addition to this an estimated 690,000 were also injured, whole families, industries and areas were wiped out in the blink of a second. The scale of destruction is hard to imagine but earthquakes of all scales continue to happen all the time.

So what exactly are they ? Well the earths outer layer is made up of a thin crust divided into a number of plates. The edges of these plates are referred to as boundaries and it’s at these boundaries that the plates collide, slide and rub against each other. Over time when the pressure at the plate edges gets too much, something has to give which results in the sudden and often violent tremblings we know as earthquakes.

The strength of an earthquake is measured using a machine called a seismograph. It records the trembling of the ground and scientists are able to measure the exact power of the quake via a scale known as the richter scale. The numbers range from 1-10 with 1 being a minor earthquake (happen multiple times per day and in most case we don’t even feel them) and 7-10 being the stronger quakes (happen around once every 10-20 years). There’s a lot to learn about earthquakes so hopefully we’ll release some more cool facts in the coming months.


Warning: Missing argument 2 for wpdb::prepare(), called in /home/sciencef/public_html/wp-content/plugins/c9-community-publishing/c9cp-admin-functions.php on line 1151 and defined in /home/sciencef/public_html/wp-includes/wp-db.php on line 1292
user
Posted by Science Facts on 16th September 2008

Fact: The Magnetic Earth

magnetosphere

A magnet is an object that emits invisble lines of force between its poles. The earth is no different it’s just one big magnet emitting its own magnetic field between its two poles. Earths magnetic field is called the magnetosphere and surrounds the planet stretching over 36,000 miles into space, but why do we have a magnetic field and what’s it good for ?

Well scientists believe that electrical currents within the Earths molten iron core combined with the natural motion generated from the Earths rotation produces our magnetic field. This process is otherwise known as the Dynamo Effect.

So how exactly does the magnetosphere help us ? Well for starters it shields the Earth from the charged particles and radiation emitted from the suns outer surface. This stream of particles also referred to as solar wind, travels towards the Earth at speeds as high as 1,000,000 mph. Was it not for the magnetosphere which stops and deflects the solar wind the Earth would have very little protection from these destructive forces.


Warning: Missing argument 2 for wpdb::prepare(), called in /home/sciencef/public_html/wp-content/plugins/c9-community-publishing/c9cp-admin-functions.php on line 1151 and defined in /home/sciencef/public_html/wp-includes/wp-db.php on line 1292
user
Posted by Science Facts on 17th July 2008

Fact: Peregrine Falcon Facts

peregrine falcon

The peregrine falcon is one of the fastest creatures in the world thanks to its amazing dive speeds which have been recorded as high as 200 mph. Their level flight speed of around 40-50 mph is also extremely fast with very few bird species being able to match them.

Peregrine falcons have a length of around 40-50cm, a wingspan of around 80-120cm and weigh in at around 1kg which means they’re not the largest of birds (the females are slightly larger and more powerful). Now despite being of average size they’re still extremely effective as predators making most small birds and even mammals like bats, rats and rabbits their prey.

Historically falcons have been recognised for their grandeur and expert flying abilities. Many ancient civilisations used them for hunting, sporting activities and the Egyptians even recognised their Sky God (Horus) as a half peregrine falcon half man creation.

Despite a great past these awesome birds did have some problems with DDT pesticides during the 60s and 70s. The DDT which is now banned in farming was affecting the thickness of their egg shells making them so weak that an incubating adult would crush and destroy their own egg. Despite these problems falcon populations have recovered their numbers and are now considered stable.


Warning: Missing argument 2 for wpdb::prepare(), called in /home/sciencef/public_html/wp-content/plugins/c9-community-publishing/c9cp-admin-functions.php on line 1151 and defined in /home/sciencef/public_html/wp-includes/wp-db.php on line 1292
user
Posted by Science Facts on 17th July 2008

Fact: Emperor Penguin Facts

emperor penguin

The emperor penguin who weighs in at an almighty 90lbs and stands at an average height of 4 foot are not only one of the heaviest bird species on the planet but has an amazing life span of around 50+ years. Most other penguin species have a life expectancy of only 10 years, so it’s mind boggling and not fully understood why the emperors live an extra 40 years. 

The fun facts don’t stop there because the male emperor penguin is also the only bird that lives out the complete winter on the antarctic continent. It will serve out some of the coldest, harshest (-60 Degrees Celcius) weather seen anywhere on the planet, whilst at the same time incubating the females egg.

During this time the emperor penguin will fast, sometimes going without food for over 120 days. Once the female returns to nurture and feed the hatched egg, the male emperor finally gets a chance to head out and grab some munch.


Warning: Missing argument 2 for wpdb::prepare(), called in /home/sciencef/public_html/wp-content/plugins/c9-community-publishing/c9cp-admin-functions.php on line 1151 and defined in /home/sciencef/public_html/wp-includes/wp-db.php on line 1292
user
Posted by Science Facts on 14th June 2008

Fact: The Kangaroo Hop

 

Did you know that the kangaroo is the only large animal that uses hopping as a form of movement. In fact the kangaroo hops so efficiently that it can easily hop at speeds of around 25mph for distances up to  2km and over short distances can hit speeds as high as 40-45mph.

Despite the kangaroo having such a fast and energy efficient hopping technique it unfortunately cannot walk in the conventional sense. Rather it uses its tail and fore limbs to help it pivot and almost crawl if it needs only move a few steps.

Page 4 of 10« First...«23456»...Last »