Ice Ages

Caused by long periods of reduced atmospheric and surface temperature, widespread continental glaciation and cooling are called Ice Ages or Glacial Ages. Questions about the most recent and current geologic period, the Quaternary, and other ice ages are what this category is all about.

3,365 Questions
Meteorology and Weather
Snow and Ice
Ice Ages

Why is ice hard?

As the temperature lowers the molecules slow down and form into a crystal. The total volume of actual h2o is smaller. The reason the ice cube is larger than its relative size in liquid form is due to gaps the crystal structure creates. The higher density and crystal structure makes solids of any molecule much harder relative to its liquid counterpart. This goes for every liquid vs. solid.

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Ice Ages

How did the ice age people make there clothes?

During the ice age most people were nomadic hunter gatherers and their clothes would mainly have been fashioned from animal skins and furs.

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Ice Ages

How did the early man survive the ice age?

Early man migrated to warmer areas where they could find food.

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Global Warming
Snow and Ice
Ice Ages

Was there a real ice age in 2012?

No, in fact 2012 continued the warming trend of the previous years. It was "the warmest year on record" for the lower 48 states of the US, and the eighth warmest year world-wide.

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Geology
Rainforests
Ice Ages

Where are the oldest rocks in the world located?

The very oldest rocks discovered to date were found in 2008 in Northern Quebec, along the Hudson's Bay coast, 40 km south of Inukjuak.

There are other locations around the globe that have rocks around the 3.8 billion years old (and older!) mark, some in Austrailia, Africa and other places in Canada.

Please see the related questions for more information.

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Ice Ages

What countries were affected during the ice age?

The countries most affected during the last glaciation were those countries which still experience snow and ice during the winter. That is most of the North American continent, most of Europe and Scandinavia, Russia, northern China and Japan.

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Dinosaurs
Ice Ages

Did the Dinosaurs come before the ice age?

Yes

EDIT

Depends which "Ice Age" you mean. The earliest and longest ice age was the Cryogenian period which began over 850 million years ago and lasted until 635 million years ago. Even "cryo" refers to the cryosphere; the amount of ice on the Earth. In relation to your question, it would be no. The Ice Age the answerer above is probably referring to is the times when the Wooly Mammoth dominated in the Pleistocene period that began over 2,500,000 years ago and ended over 11,000 years ago.

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Science
Ice Ages

How has the climate changed since the last ice age?

As we are still in an ice age which began 2.6 million years ago I presume you mean "glaciation".

The overall average temperature has risen otherwise we would be sitting on 1km thickness of ice.

Temperature change tends to vary depending on which part of the earth you look at, 4-6 degrees C in East Africa and 2-3 degrees in higher latitudes. Areas receiving rainfall during times of glaciation are now quite dry as the weather systems move with the retreating ice.

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American Revolution
Ice Ages

What revolution took place during the neolithic revolutions?

the agricultural age

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Ice Ages
Books and Literature

Who is Sovi in Maroo of the Winter Caves?

Sovi is one of the Tribe Leaders.

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Plate Tectonics
Ice Ages

What is a pillow lava and where can you find one?

A pillow lava is a lava which has been erupted under water. Because of the cooling effect and pressure of the water it forms pillow-like structures which sometimes build up into thick deposits. Ancient deposits can be found all over the world, though newer lavas can be found in areas such as Iceland where a combination of ice caps and volcanism create suitable places for pillows to form.

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Ice Ages

Did cavemen live during the ice age?

Yes they did they lived in igloos or huts

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Dinosaurs
Paradox and Antithesis
Ice Ages

What came first the dinosaurs or creation?

The word 'creation' means 'to bring in to existence' or 'to come in to being'. Life cannot exist without a medium, and the earth has not always existed. Therefore, regardless of your religious views, the creation of the earth must have occured before dinosaurs evolved or were created, excepting those (rather strange) faiths that believe that the earth always has been and always will be, as well as those which believe that all change is illusory.

Dinosaurs existed well over 60,000,000 years ago and the myth of Creation first started a few thousand years ago. So dinosaurs.

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Animated and Children's Movies
Ice Ages

Name of the squirrel from ice age?

Scrat

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Ice Ages

How have archaeologists learned about the ice age?

They studied the artifacts of people who lived long ago.

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Snow and Ice
Mongolia
Ice Ages

How do Mongolians survive in the ice age?

They survived by living in cavesand as a result they learnt how to make fire and learnt how to grow their own food by trial and error.

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Geology
Paleontology
Ice Ages

What is the Quaternary Period?

The Quaternary is the most recent geological time period, which started 1.67 to 2.4 million years ago depending on the area studied. The Quaternary is part of the Cenozoic ("new life") Era, along with the Tertiary Period. The Quaternary Period includes recent time (the last 11,000 years ago, since the last ice age) which is called the Holocene and the Pleistocene Epoch.

There is currently much debate as to how long the Quaternary period is. There are considerations into re-classifying the Quaternary as it is "technically" too short to be considered a geological age. But this is a matter of much conjecture at the moment.

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Geology
Ice Ages

What are the countries that receive less cold and more heat?

eXAMPLE:PHILIPPINES,jAMAICA,AND MORE

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Earth Sciences
Atmospheric Sciences
Ice Ages

What happens to snowflakes when air gets colder?

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Atmospheric Sciences
Ice Ages

What are the consequences if nitrogen gas is absent from Earth's atmosphere?

ancomfortable breathy systerm because when you breath oxygen in you body scienty say that human can breath 1% of nitrogen inorder to newtrories

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Earth Sciences
Ice Ages

What causes ice ages?

This is very complicated (it involves lots of factors) but I will try and put it simply.

The most important factor is that for some considerable (geologic) time the composition of Earths atmosphere has been changing. The amount of CO2 in it has been decreasing. The CO2 has been gradually 'locked up' in limestone. As CO2 is a greenhouse gas, it presence in the air keeps the Earth warm. When there is too little of it in the air the Earth cools significantly and the planet becomes susceptible to other factors that affect it temperature.

The most important of these secondary factors is Earth's orbital cycles and its axial tilt. The Sun is the source of heat keeping the planet warm and as the Earth orbits the Sun, at various stages of the orbit the amount of the Sun's heat hitting the sea/land varies. (see related link below).

The next factor is the process by which heat is distributed round the world and the reflectivity of the Earth's surface. The equatorial areas are heated by the Sun most and the Poles least. This in turn heats the air and water near the equator and the ocean currents and Earth's weather system then carry hot air and water to the poles and cold air and water back. In the ocean these currents are vast and are called the ocean conveyor. Changes to these are involved in Ice ages.

Also the air currents bring precipitation to the poles as snow. Snow is white and reflects the Sun's energy back into space and this means as an Ice age starts and snow settles the planet cools fast. Conversely when snow melts the planet can warm very quickly.

OK the above are the factors and mechanisms involved in Earth's Ice age cycle. The key is that because of CO2 loss the average temperature of the planet has cooled enough to allow Ice ages to happen. The current configuration of the continents and the Earth's axial tilt means that the variations in Earth orbit round the Sun causes phases of warmer and cooler times and Earth's atmosphere and ocean in response to this amplify the heating/cooling effect resulting in an Ice Age cycle.

Cause of the Ice AgeThe cause of ice ages remains controversial for both the large-scale ice age periods and the smaller ebb and flow of glacial/interglacial periods within an ice age. The general consensus is that it is a combination of several important factors: atmospheric composition (the relative amounts of water vapor, carbon dioxide, methane, sulfur dioxide, and various other gases and particulates in the atmosphere), changes in the Earth's orbit around the Sun known as Milankovitch cycles (and possibly the Sun's orbit around the galaxy), the motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on the Earth's surface, variations in solar output, the orbital dynamics of the Earth-Moon system, the impact of relatively large meteorites, and eruptions of supervolcanoes.
An Ice Age starts every 100,000 years! Scientist have proven this by they dig holes in snow in the Arctic and they can tell by the shape of the ice what the temperature was from up to 2 million years ago!

BTW this is from kailey a 10 year old!

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Ice Ages
Animated and Children's Movies

How do you draw Sid from Ice Age?

HERE.......HERE ARE SOME STEPS: STEP 1:YOU DRAW AN OVAL FOR HIS HEAD STEP 2:YOU MAKE SOME FUR STEP 3:YOU DRAW THE NOSE STEP 4:YOU DRAW THE EYES BONUS STEP:ALWAYS FOLLOW STEPS 1 2 3 AND 4 IF IM WRONG(hope this has been some advice)(hope that you like it)(TALK TO YOU SOON)CODENAME:Learning How To Draw Sid

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Taxonomy
Ice Ages

What is the scientific name for ice age?

Pleistocene era.

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Ice Ages

When did the last ice age start in Scotland?

The present ice age started over 2.5 million years ago and we live in a warm interglacial period within that ice age.

The last interglacial ended less than 120,000 years ago, so as far as Scotland is concerned, the last glaciation started about 115,000 years ago.

There was a warm period about 14,700 years ago but glaciers returned at 12,900 years, (Loch Lomond Readvance) and only started warming again 11,500 years ago.

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Ice Ages

What are two signs that people who lived during the ice age developed more complex cultures?

my name is kenobi and its FING FOOD THAT IT

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