The earth is about 4.6 billion years old. Based on the formation of seafloor spreading, why do you think that the oldest ocean floor is only about 200 million years old?

Q: A paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive…

A: Earlier, paleontologists were only able to understand biological succession, they weren't aware of…

Q: B. Directions: Differentiate continental crust from oceanic crust by filling in the table below.…

A: Earth's crust is divided into older, thicker continental crust, and younger, denser oceanic crust.

Q: 1. Which statement is NOT a principle or relative-age dating? sc.7.E.6.3 A Layers of sediment are…

A: Relative dating is the procedure that is performed for finding out the age of a particular object by…

Q: The heaviest elements during the Earth’s formation were what?  What part of the Earth did they form?…

A: The structure of the earth is divided into four major components: the crust, the mantle, the outer…

Q: Table 1 Millions of Years Ago (Mya) Event First humans (genus Homo) The Origin of the Earth First…

A: According to astronomical research and geological evidence, scientists indicate the universe is…

Q: Which fossil layer is the youngest (name the geological period)?

A: The Cenozoic fossil layer is the youngest among the three layer.

Q: What layer do tectonic plates sit on? O A. Continent B. Inner core O c. Outer core O D. Mantle

A: Tectonic plates sit on the  mantle layer of earth. German meterologist ALFRED WEGENER is credited as…

Q: Why do you think it was so important to science when Alfie Wegener and Harry Hess proved their…

A: Alfred Wegener made proof in 1912 that the continents are in motion, however as a result of he…

Q: Explain the consequences of plate tectonics for lifeon Earth.

A: The continents form a part of the floating plates of the crust of the earth. Movements of the mantle…

Q: What argument convinced most scientists in the 1800s that Earth was more than 6,000 years old?…

A: Fossils are the remains of the organisms that were present on the earth in the past.

Q: Which of the following eras in Earth's history is the longest? Precambrian Cenozoic Paleozoic…

A: A geological era divides eon into smaller unit of time. Geological era are further divided into…

Q: Activity 5.2 Match This To0 Directions: Match the following terms in Column A with their definitions…

A: Definition:  Original horizontality -  it suggests all layers of rock are originally deposited…

Q: During what geologic period did life on Earth begin?

A: Evolution is the process of gradual changes occurring in the species over a period of time, when the…

Q: sedimentary rock is pushed up by a fault, a ____ mountain is formed  A. Fault-block B. Folded C.…

A: SEDIMENTARY ROCKS- These are those rocks that are formed by the layered deposition of different…

Q: Your history teacher asked you to show something that can give idea of the information about the…

A: Sedimentary rocks are formed by the process of sedimentation of particles, biomass, and minerals…

Q: The greatest mass extinction episode in the history of life occurred at what boundary? (a)…

A: Mass Extinction events can be defined as those events in which half or more than half of all…

Q: Why was it believed that life began in the seas and not in land or air? * Land and air were…

A: Option a is correct  Land and air were inhospitable places for life during the archean eon.

Q: What evidence would you look for on Enceladus, Europa or Mars that would tell you that life may have…

A: Europa is the smallest of four Galilean moons orbiting Jupiter. Enceladus is the sixth-largest moon…

Q: Why are sedimentary rocks so common on the surface of the continents?

A: A solid and naturally existing aggregate of minerals or mineraloid matter is known as a rock. The…

Q: 1. It is where all traces of history of earth is recorded in rocks that make up the crust. 2. It is…

A: The geological time scale provide all the information about the evolution or descent of the…

Q: In trying to understand the formation of the early Earth, some researchers have suggested that the…

A: 1) According to this article the earth's water came from icy comets pelted on earth and deposited…

Q: What was the Earth like million of years ago?

A: Millions of years ago, there is no life on the Earth. The temperature of the Earth was scorching,…

Q: Relative-Age Dating Absolute-Age Dating Younger 440 mya 480 mya 520 mya 545 mya Older 2. The dates…

A: Ans: C: Igneous rock layers

Q: Given the life-style we live today, what pre-historic period gives us the ability to heat our homes,…

A: the ability to heat our homes, run our cars, and have a comfortable life was the ability of humans…

Q: what element rise that caused the diversification event in evolution of earth

A: Introduction : The rise in oxygen, which is termed the Great Oxygenation Event is an important event…

Q: Relative dating of sedimentary rock is location specific due to Differences in fish assemblages…

A: Limestone and sandstone are types of sedimentary rocks.

Q: What evidence did Lord Kelvin and Charles Darwin each use to support their conclusions about the age…

A: Kelvin evidence:- Based on the time required for an initially uniform and hot thermal structure to…

Q: Which of the following is characteristic of the end of the Paleozoic Era? a There was a mass…

A: As experts believe, the Earth was formed as a result of the Big Bang Explosion. The geological time…

Q: ss the major subdivisions of Geologic Time and its contributions to civilization in 100 words each…

A: The  time interval occupied by the geologic history of Earth is known as geologic time. The geologic…

Q: Base your answers to questions 11 to 14 on the diagram below of an ocean profile showing different…

A: The oceanic zone is the region of the ocean sea in layers which constitutes specific species…

Q: If Marine communities dominated during the Early Paleozoic, why move to land? What would an…

A: Paleozoic era was a major interval of geologic time that began 541 million years ago and ended about…

Q: What is seafloor spreading? O A. The movement of a continent over time B. The formation of new ocean…

A: Sea floor spreading is an interaction that happens at mid-sea edges, where new oceanic crust is…

Q: Which of the following do not provide evidence that a meteor strike was a partial cause of the…

A: About 65.5 million  years ago KT extinction event occurred which wiped off the dinosaurs from the…

Q: Could the First Biological Molecules Have Formed NearVolcanoes on Early Earth?

A: In 1953, Stanley Miller conducted an experiment in the laboratory of Harold Urey to understand the…

Q: Which fossil layer is the oldest (name the geological period)?

A: When geologists study 3 rock layers (and their fossils), there is a good chance that the upper layer…

Q: Directions: Using the Geologic Time Scale, copy and complete the table below by supplying the blank…

A: Paleozoic era The era of ancient life began around 544 million years ago, when creatures formed hard…

Q: The theory of plate tectonics explains how Earth's continents move. According to this theory, which…

A: Plate tectonics is a scientific theory which explains about the large scale motion of the seven…

Q: Which of the following pictures represents what scientists thought the bottom of the Atlantic Ocean…

A: Atlantic ocean body of salt water covering approximately 1/5th of Earth’s surface and separating…

Q: In undisturbed sedimentary rock, strata from the _ period are immediately below rocks from the…

A: Relative dating is the science of interpreting the relative order of events that occurred in the…

Q: Which of the following evidence was used by Wegener to support his hypothesis that the conti- nents…

A: Alfred Wegener is a German scientist who proposed a hypothesis called Continental drift in the early…

Q: what geological process generates the worlds largest undersea mountain chain the mid Atlantic ridge

A: The geological process which generates the world's largest undersea mountain chain in the mid…

Q: at is the term for an element that decays into another O A. Sediment O B. Mesozoic O C. Radioactive…

A: This is the physical phenomenon of certain elements of emitting energy in the form of radiation.

Q: most recent mass extinction, occurred about 251 million years ago. What is the leading hypothesis to…

A: Permian extinction occurs about nearly 251  million years ago,it results in the vanishment or…

Q: Describe the conditions on Earth 4.5 billion years ago

A: Evolution is the process of slow gradual change over a period of time. The process of evolution…

Q: How do sedimentary rocks form?

A: There are three major rock types including igneous, metamorphic, and sedimentary rocks. Among these,…

Q: How do we know when oceans were first present on Earth?Why is the presence of oceans significant to…

A: The water body, which consists of hydrosphere of different planets, is called oceans. The 71%…

Q: Which of the following areas is NOT part of the lithoecosphere? A. Polar caps B. Erupting volcano…

A:

Paleontology

A branch of science concerning the scientific study of life from ancient times is known as paleontology. The scientists working on paleontology are known as paleontologists. Paleontologists collect the fossils of organisms from ancient times to classify them. The paleontologists also study the environment from ancient times to study the interactions between different organisms.