Critical and Creative Thingking Questions

The author and his colleagues specifically chose to focus on 375 million year old rocks in their search for fossils because this was the time frame that provided fish that would be useful to study from. The 385 million year old rocks provided fish that look too similar to the ones we have now and the 365 million year old rocks have fossils that don’t resemble fish. The 375 million year old rocks, however, provide fossils that show the transition between fish and land living animals.

The Geologic column was introduced in the nineteenth century do to the discovery of fossils with hard shells and skeletons this made it easier for geologist to date layers of strata by the fossils held within. The discovery of fossils from soft shelled creatures and plant

During the Cambrian Period there was an explosion of life forms. Most of these were in the water. Many animals with no backbones lived in the shallow seas. These animals were invertebrates.

b) Go online and research. Give at least three examples of actual species that were present in the Devonian period. What is the point, if there IS any point, to naming and describing species that went

Venus + Mars: Compare and contrast the evolution of the atmospheres of Mars, Venus, and Earth.

The atmosphere on Venus is composed of mostly Carbon dioxide with small amounts of nitrogen and sulphuric acid. This composition causes a runaway greenhouse gas effect that makes the planet even hotter than Mercury, despite the fact that Mercury is much closer to the sun. The air on Venus is incredibly dense due to the Nitrogen content, which, whilst admittedly is only a small part of the atmospheric composition, is at least four times the amount on Earth. This Atmospheric composition therefore creates a thick layer of

The air is not breathable by humans! Venus's atmosphere also contains traces of extra compounds and elements, such as neon, argon, carbon monoxide, and helium. Atmospheric pressure is over 90 times heavier than that of Earth; sheer crushing power. Clouds of sulfuric acid lay above a layer of carbon dioxide near the crust. These sulfuric clouds block most Muggle attempts to see Venus. On Venus, the climate changes all the time, from an extremely cold temperature to an extremely hot one. The temperature ranges from -364 to 870 degrees Fahrenheit. Venus is the hottest planet in the Solar System, and yet it is Mercury that is the closest planet to the Sun, Venus being second in

Although Earth and Venus are known as "The SisterPlanets" they both have varying factors. Today I will be talking about Venus. References of Venus go as far as 1600 BCE. It is named after the Roman

Mercury is the closes to the sun and Venus is 2nd close to the sun. Mercury and Venus are inter planets that means they are two of the 4 inter planets. They are not made of gas that is only the outer planets are the only ones that can be made of gas. Venus earth's closest neighbor in the solar system. Venus is the brightest object in the sky after the Sun and the Moon, and sometimes looks like a bright star in the morning or evening sky but I have never seen it before. Mercury is named for the ancient Roman god of trade and profit the roman people believed in many

1. The author chose to focus on 375 million year old rock because the transition from fins to necks and limbs occurred then. The scientists knew that any time later than this and they would find lots of animals with limbs. But if they searched earlier than this time then there are only fish without necks. When the fish were evolving they evolved necks before they evolved limbs so this was a good sign in chronology. Sedimentary rocks are the best types of rocks for fossil due to their gradual pressure and low amounts of heat. Sedimentary rock is also found in lake beds and streams, where fish and aquatic wildlife are most likely to live.

14) Which one of the following minerals has the greatest hardness on the Mohs hardness scale? A) Feldspar B) calcite C) gypsum D) topaz 15) Which of the following best defines a mineral and a rock? A) A rock has an orderly, repetitive, geometric, internal arrangement of minerals; a mineral is a lithified or consolidated aggregate of rocks. B) A mineral consists of its constituent atoms arranged in a geometrically repetitive structure; in a rock, the atoms are randomly bonded without any geometric pattern. C) In a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a rock is a lithified or consolidated aggregate of minerals. D) A rock consists of atoms bonded in a regular,

While the diameter of Venus is 12,092 km, when compared to the Earth Venus is only 650 km smaller. Even though the Earth and Venus share a lot of similarities such as composition of the ground, gravity, and diameter, this is where the differences come in. Earth is capable of supporting life; Venus is hazardous to life. The Earth has liquid water, and hard rocky surface, Venus’ land masses is made of hardened magma, with very little rocky surfaces. Another key difference between the two planets is Venus has a weaker magnetic field when compared to the Earth. Venus also spins very slowly once per 243 Earth days; this could be the result of Venus’ core not being as active or even if it if

The atmosphere of Venus is extremely dense because it consists mainly of carbon dioxide and a small amount of nitrôgenio.A surface of Venus is effectively isothermal it maintains a constant temperature not only between day and night but also at the equator and the poles.

Around three years ago was the first time in 115 years that Venus’s path brought it right in the middle of Earth and the sun. This led to a rare chance to take unique photographs of the planet and study its atmosphere as well as how the sun’s solar radiation affects it. This is the planet’s time to shine to show us brand new information.

The atmosphere of Venus made up of 98% carbon dioxide and 2% Nitrogen. This atmosphere also has the presence of helium, neon and argon. This is yet another thing which makes Venus different from Earth.