What causes convection currents and where in Earth’s interior do they occur?
Explain how the ocean floor grows at a divergent boundary. Explain what happens to the ocean floor at a convergent boundary.
What often occurs at transform boundaries?
Compare P and S waves. How are they similar? How are they different? How are they measured?
Explain the process of triangulation that is used to locate the epicenter of an earthquake.
Describe a shield volcano and explain how these form.
What is viscosity? What factors affect viscosity?
What characteristics does something have to have in order to be classified as a mineral? Why aren’t coal and glass considered to be minerals?
How do you test for a mineral’s streak? Why is streak more reliable to use when identifying a mineral than color is?
How do igneous rocks that form from cooling lava differ from igneous rocks that form from cooling magma?
What are the different types of sedimentary rocks? How does each form?
How do metamorphic rocks form? Explain how limestone could change into a metamorphic rock. What would it then be called?
Explain the rock cycle. How could an igneous rock change into a sedimentary rock? How could a sedimentary rock change into an igneous rock?
What does “uniformitarianism” mean? How does this idea help us to understand Earth’s history?
Describe the different layers of Earth’s atmosphere.
A common misconception that many people have is that air and oxygen are the same thing. Why is this idea not correct? What is the major gas in Earth’s current atmosphere?
What is a temperature inversion? Why is there a temperature inversion in the stratosphere?
What is a barometer used for? What does changing barometric pressure tell us about weather?
Describe each of these and give an example of each: radiation, conduction, convection
Why is warm air less dense than cold air? What effect does that have on air circulation?
(5.13) Where on Earth’s surface does the sun’s energy hit at the most direct angle? Where does it hit at the least direct angle?
(5.14) What is the Coriolis effect and what causes it?
(6.01) What is the difference between weather and climate? Give an example of each one.
(6.09) Do hurricanes (tropical cyclones) have low pressure or high pressure? Explain.
Explain how and where hurricanes form.
Chosen Answer:
wow… that was a lot of questions..
I will answer a few until I get bored/
1) convection currents are caused by adiabatic cooling – warm air is less dense than colder air, and so warm air rises, as it rises it expands and cools, and then begins to fall. This process occurs in the troposphere of the earth’s atmosphere.
2) The ocean floor grows at a divergent boundary because a divergent boundary is two plates moving away from eachother and magma coming through and solidifying. This occurs below the ocean and it is called a mid-ocean ridge. At a convergent boundary crust is compressed and area is reduced.
3) Transform boundaries is two plates sliding past eachother on the same plane.
4) P and S waves are in earthquakes. P waves come first, they are called primary waves. They move in an up and down motion. S waves are secondary waves and come immediately after P waves. They are often most damaging. S waves move in a side to side motion. They are measured with a seismograph.
5) You have to use atleast three different seismograph stations because you take the radius around the centre to where the earthquake was felt and where the three circles from three different stations line up is where the earthquake occurred. You have to use three because there will only be one location where all three circles meet up – whereas if you used two stations, they would meet up in two locations.
6) Shield volcanoes are the largest volcanoes. They are less intense. I dont feel like going into more detail. Wikipedia it.
7) Viscosity is the thickness of the lava. It is determined by the amount of silica in the lava – more silica gives a thicker lava.
8) A mineral is described as a naturally occurring, inorganic solid that is found in the earth. Coal and glass are not minerals because they are not made up of just one material.
9) A streak is the colour that the rock gives if scratched on a surface. It can be determined by scratching against a solid white surface. It is more reliable to use than colour because colour can be changed on the surface, whereas streak will always remain the same.
10) I dont feel like answering that
11) An example of a sedimentary rock is shale. Sedimentary rocks are formed by sediments being compacted.
12) Metamorphic rocks are formed by the metamorphism of sedimentary rocks. Limestone can change to a metamorphic rock because the calcium in it reacts with water and dolomite is formed.
13) look up a diagram\
14)dont know
15) There is the troposphere (which is broken up into the Laminar Layer, the Roughness Layer, the Inner Layer and the Outer Layer), the stratosphere, the thermosphere and the…. look it up
16) look it up
17) There is a temperature inversion at the stratosphere because it is a capping layer on the planetary boundary layer. It is where 90% of the earth’s atmospheric properties take place.
18) measures pressure – look it up
19) look it up
20) see first answer
21) hits directly at the equator and less north and south of there. The angle at which the sun hits the earth is known as the zenith solar angle.
22) The coriolis effect is the effect on the winds from the rotation of the earth.\
23) Weather is day to day. Climate is an average of weather of a region over a long period of time.
24) look up the last two
wow…
by: justpickles
on: 15th December 08