Se muestran los artículos pertenecientes a Octubre de 2013.
Click on the image to get a Lunar calendar 2013 with the exact dates and times of the moon phases in 2013 year.
Learn about the Earth, Sun & Moon’s orbits as you experiment with different dates and times in this fun activity for kids.
Discover how long the Earth takes to orbit the Sun, how many hours it takes the Earth to spin around once on its own axis, how long the Moon takes to orbit the Earth, how it all relates to our calendar and other useful facts.
Watch how the Earth and Moon orbit the Sun, is it how you expected?
Find the answers to these questions and learn more about the size of the Earth, Sun & Moon, their shape and the speed they travel through space with this cool, interactive science game.
- What is the universe? What does it include?
- What is a galaxy? What is the name of our galaxy?
- What are stars? What do they produce?
- How can we classify stars? According to this, which kind of star is the Sun?
- What is a large star called? And a small one?
- How long does the Sun take to revolve around our galaxy?
- Classify the planets in our solar system, from the closest to the farthest from the Sun.
- What is the difference between the inner planets and the outer planets?
- What are comets made of?
- What are natural satellites? What is the name of the one that revolves around our planet?
- How does the Earth move? Explain both movements.
- How long does the Earth take to complete one rotation?
- What is the direction of the Earth’s rotation?
- What happens every year on 21st June in the Northern Hemisphere?
- What does begin in the Southern Hemisphere when winter begins in the Northern one?
- How long is one lunar orbit?
- Why can we only see one side of the Moon?
- Name the lunar phases. Why do we see the full moon?
- What happens during a solar eclipse?
- What happens during a lunar eclipse?
In this unit we are going to learn the following contents:
- Value of water for life and knowledge of its adequate and inadequate uses.
- Parts of the Earth: atmosphere, geosphere and hydrosphere. Definitions.
- Components and layers of the atmosphere.
- Materials and layers of the geosphere. Properties of minerals. Types of rocks according to their origin.
- Phenomena produced by the energy inside the Earth.
- Minerals and their basic characteristics.
- Identification and representation of the layers of the atmosphere and their characteristics (troposphere, stratosphere, ionosphere).
- Identification and representation of the layers of the geosphere (crust, mantle and core).
- Classification of different kinds of rocks according to their origin (volcanic, sedimentary, metamorphic).
- Recognition and representation of a volcano and its basic parts.
- Representation of the Earth in different forms.
- Recognition of the basic imaginary lines of the Earth (Equator, meridians and parallels).
Published on Oct 15, 2012
After flying to an altitude of 39,045 meters (128,100 feet) in a helium-filled balloon, Felix Baumgartner completed a record breaking jump for the ages from the edge of space, exactly 65 years after Chuck Yeager first broke the sound barrier flying in an experimental rocket-powered airplane. Felix reached a maximum of speed of 1,342.8 km/h (833mph) through the near vacuum of the stratosphere before being slowed by the atmosphere later during his 4:20 minute long freefall. The 43-year-old Austrian skydiving expert also broke two other world records (highest freefall, highest manned balloon flight), leaving the one for the longest freefall to project mentor Col. Joe Kittinger.
The Rock Cycle is a group of changes. Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock.
Igneous rock forms when magma cools and makes crystals. Magma is a hot liquid made of melted minerals. The minerals can form crystals when they cool. Igneous rock can form underground, where the magma cools slowly. Or, igneous rock can form above ground, where the magma cools quickly.
When it pours out on Earth’s surface, magma is called lava. Yes, the same liquid rock matter that you see coming out of volcanoes.
On Earth’s surface, wind and water can break rock into pieces. They can also carry rock pieces to another place. Usually, the rock pieces, called sediments, drop from the wind or water to make a layer. The layer can be buried under other layers of sediments. After a long time the sediments can be cemented together to make sedimentary rock. In this way, igneous rock can become sedimentary rock.
All rock can be heated. But where does the heat come from? Inside Earth there is heat from pressure (push your hands together very hard and feel the heat). There is heat from friction (rub your hands together and feel the heat). There is also heat from radioactive decay (the process that gives us nuclear power plants that make electricity).
So, what does the heat do to the rock? It bakes the rock.
Baked rock does not melt, but it does change. It forms crystals. If it has crystals already, it forms larger crystals. Because this rock changes, it is called metamorphic. Remember that a caterpillar changes to become a butterfly. That change is called metamorphosis. Metamorphosis can occur in rock when they are heated to 300 to 700 degrees Celsius.
When Earth’s tectonic plates move around, they produce heat. When they collide, they build mountains and metamorphose (met-ah-MORE-foes) the rock.
The rock cycle continues. Mountains made of metamorphic rocks can be broken up and washed away by streams. New sediments from these mountains can make new sedimentary rock.
The rock cycle never stops.
- Name and define the three parts of the Earth.
- What do we call the gaseous layer that surrounds the Earth? Name its layers.
- Which layer of the atmosphere reflects radio waves?
- What is the ozone layer?
- Which are the layers of the geosphere? Which one is mostly made of iron?
- Where can we find water in a liquid state on the Earth
- What are the properties of minerals?
- How are metamorphic rocks formed?
- What does the process of erosion do to rocks?
- How do sedimentary rocks become metamorphic rocks?
- Classify the following rocks by their origin: conglomerate, basalt, slate, granite, carbon, sandstone.
- What do we call magma when it flows out of a volcano?
- What are the parts of a volcano?
- Why are areas and distances distorted on maps?
- What is another name for the Prime Meridian?
- Define latitude and longitude.
- What is the latitude of the equator?
- What are meridians? And parallels?
- Are meridians circular or semicircular?
I have selected a few websites for you to get plenty of ideas and information about Halloween!!!
How much do you know about Halloween already?
Learn more and test your knowledge by doing the task proposed in this HALLOWEEN WEBQUEST created just for you.