Timeline Activity 1. Write the following events of the Earth's history on the space provided according to its year. PRESENT 65 MYA TO Events of the PRESENT Earth's History 248 MYA CENOZOIC PRECAMBRIAN 543 MYA MESOZOIC PALEOZOIC 4000 MYA BILLION YEARS AGO

Q: Approximately how many stars are visible with the naked eye in the night sky? (1). Where in the nigh...

A: Stars are astronomical objects, consisting of a luminous spheroid of plasma held together by the act...

Q: Referring to the graph shown below, which of the following statements best describes the trend in gl...

A: 1. Total ice remained constant but decreased from 10 million km2 to around 8 million km2 in recent t...

Q: Discuss the Structure of the Ecosystem and give examples for each structure

A: An ecosystem is defined as the community of living organisms interacting and living in association w...

Q: silicate anion (SiO44-) “orthosilicate” is the basic building block of all silicate materials. Draw ...

A: Silicate ions are the fundamental ions for all the silicate minerals. These are made up of a single ...

Q: Sydney and Valparaiso are the same distance from the equator and both are near the ocean. Is Valpara...

A: When the weather pattern over a region is tracked for at least 30 years, we estimate the mean trend ...

Q: Melting and boiling potnt decreases down the group at left side of periodic table BUT increases down...

A: For groups 1 and 2, on moving down the group, the force between the two atoms inversely related to t...

Q: How is heat transported from tropical regions to polar regions?

A: Solar energy is not distributed uniformly over the surface of the earth. Between 35 degrees north la...

Q: What is happened if we add gypsum to drilling mud and why ?

A: Gypsum is a soft sulfate mineral made up of calcium sulfate dihydrate.   Disclaimer: Since you have ...

Q: The decision to install solar electricity often comes down to tradeoffs in installation costs, payba...

A: Electricity cost = $0.08/kwh Total consumption of energy =1,000,000 kwh/yr

Q: What is latent heat? How is it important in moving energy through the atmosphere?

A: The atmosphere, coupled with the oceanic currents, acts as a global conveyor belt in the circulation...

Q: Why is the annual temperature range smaller along the coast of Norway than at the same latitude in S...

A: The country of Norway is situated in the Northern Europe. It is a small country compared to the Sibe...

Q: List factors that influence whether a rock will deform in 1. In an Elastic manner 2. In a plastic ma...

A: Deformation is the process in which the rock transformation takes place due to stress. Any rock unde...

Q: Which of these phrases best describes the element helium and its relationship to the other elements?...

A: Helium is an inert gaseous element, which has an atomic number equal to 2. The orbital is completely...

Q: Billions of years from now, the galaxy Andromeda will actually collide with our galaxy, the Milky Wa...

A: The nearby galaxy Andromeda is moving towards us at a speed of 250,000 mph.   Disclaimer: Since you ...

Q: INTRUSIVE & EXTRUSIVE Look at the picture below. Drag the blue boxes to correctly label it. intrusiv...

A: Rocks are naturally occurring substances composed of solid crystals.

Q: What principle in stratigraphy is used in the given picture below? Explain

A: Stratigraphy is the study of layered rock formations and is used to understand the relative time and...

Q: Directions: From the lessons learned, briefly provide your answer & explanation on the following...

A: The 1883 explosion of Krakatau has been a major catastrophic volcanic eruption in past. It is one of...

Q: Do the warmest temperatures occur over continents or over oceans? Do the coldest temperatures occur ...

A: The specific heat of water is more than that of land. Therefore the land heats up quickly and looses...

Q: Wave-swept beaches are subjected to the same conditions as the intertidal community but support vast...

A: The wave swept beaches are part of the shore where sediments swept away under the influence of waves...

Q: What roles might each layer have on the atmosphere ?

A: Earth's atmosphere is predominantly made up of gases like Nitrogen 78%, Oxygen 21%, Argon 0.93%, Car...

Q: TYPES OF ROCKS Drag the definition in the green box to the vocabulary word it defines. igneous metam...

A: There are three types of rocks found on the earth. The definitions of the three types of rocks are g...

Q: Which latitude (north or south) receives the most intense solar energy on June 21-22?

A: A solstice is a day when the Sun reaches its maximum or minimum declination. There two solstice days...

Q: Help with this.

A: To determine the true thickness of subsurface rock formations, it is necessary to know their orienta...

Q: What kinds of stratigraphic correlation do geologists undertake?

A: Stratigraphic correlation is the method of comparing and correlating the different stratigraphic suc...

Q: Traditional methods of studying currents are being replaced with high-tech devices. How do some of t...

A: In the ocean, two types of currents occur- surface currents and deep oceanic currents. Surface curre...

Q: Out of sand, silt and clay which particles will settle down first in graduated cylinder during textu...

A: Texture refers to the size, shape, and orientation of sediments in a rock. Here we are considering o...

Q: REVIEW OUENTIONS Define the term "reck" 12 How does lava differ from magma 43 in addition to the rat...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: Q. For the circuit shown below, obtain the Thevenin equivalent circuit at terminals А-В. R3 A 20 R2 ...

A:

Q: Use facts of both marine elemental cycling and controls on ocean circulation, explain how an oxygen ...

A: Oxygen Minimum Zone Oxygen minimum zone, generally occurs at a depth of 200 to 1000 m, is a state of...

Q: Identify statement as being most like an observation, a law, or a theory. All coastal areas experien...

A: Tides are very long wavelength waves that cause periodic rise and fall of sea level on the coastline...

Q: Calculate the bulk density of a 110 Cu Cm soil sample with an oven dry weight of 250 grams.

A: Bulk density is defined as the weight of soil in a given volume. It is typically expressed in g/cm3....

Q: Determine the total calories of a food having 5 g fat, 2 g protein, and 11 g carbohydrates.

A: One gram of fat contains nine calories. One gram carbohydrates and protein contains four calories ea...

Q: Q1: Choose correct answer: 1. The characterization factor of a crude oil is calculated as 12.5. It m...

A: Crude oil is also known as petroleum. Crude oil is the general term used for all the natural hydroca...

Q: In a transformation 23892U decays to 22688Ra.  How many alpha & beta particles are emitted?

A: Radioactivity is the phenomenon of the emission of energy, in the form of various particles, due to ...

Q: What are conditions like at the center of a gyre?

A: Oceanic gyres are essentially large scale ocean currents which are in a circular motion. These are f...

Q: 4.11 Why might a laccolith be detected at the earth's surface before being exposed by erosion? 4.12 ...

A: Igneous intrusive bodies are magma that travels upwards through the Earth's crust and solidifies wit...

Q: Identify major environmental issues in Australia and Oceania as well as pathways toward solving thos...

A: A variety of environmental issues now affect our entire world. Environmental issues are issues creat...

Q: What is unique about picoplankton?

A: Planktons are organisms that drift in the marine environment.  These are the organisms that are carr...

Q: Why is the temperature different at different locations of the earth

A: The shape of the Earth is an ellipsoid, because of which there is a difference in the amount of sola...

Q: How does the ocean’s density stratification limit the vertical movement of seawater?

A: The earth is known as the blue planet because the ocean covers it by 71%. Many ions dissolved in the...

Q: Why persistent organic pollutants (POPs) have long half-life?

A: The persistent organic pollutant is chemical compounds that are toxic, persistent in all types of en...

Q: Why is the eye of a hurricane so clear?

A: A hurricane is a tropical cyclone that occurs in the Atlantic and northeastern Pacific oceans.

Q: In June, why does the outer edge of the atmosphere at the equator receive less solar radiation than ...

A: The Earth is tilted at an angle of 23.5 degrees on its axis. Due to this tilt, the Earth does not re...

Q: Describe how the bonding types and magma differentiation aids in the distribution of trace element i...

A: Magma is the hot molten, semi-liquid rock formed in the mantle. This magma comes out to the surface ...

Q: The ultraviolet spectrum can be divided into three regions based on wavelength: UV-A (315–400 nm), U...

A: Solar radiation is the electomagnetc radiation from sun and it consists of mainly, visible light, in...

Q: What are three Milankovitch cycles?

A: Milankovitch cycle describes the effect of changes in the Earth's movement on its climate over time....

Q: Drawing on the concept of the revolution of the earth' explain the relationship between latitudes an...

A: The Earth is divided into two equal hemispheres along the equatorial plane: the Northern hemisphere,...

Q: Which body nominally governs the Law of the Sea?

A: Hugo Grotius is known as the father of international law responsible for the concept of “freedom of ...

Q: Describe where in the world you find the boreal forest biome, and what the climate is like. What are...

A: The boreal forest is part of the terrestrial biome and covers about 11% of its surface. A large cove...

Q: The concept of keystone species is controversial among ecologists because most organisms are highly ...

A: It was zoologist Robert T. Paine who introduced the concept of Keystone species. The keystone specie...