All categories

2 years ago

What is the theory of continental drift? What did Alfred Wegener notice that helped him to create this theory?

2 answers:

8 0

Alfred Wegener came up with the idea in 1912 that continent are slowly drifting around the earth. However, at first his theory was rejected.
Wegener noticed that the continents looked as though they might fit together like puzzle pieces (he would later name the original supercontinent Pangea). He also noticed that there were matching geologic features and rocks on different continents, as well as matching fossils of land animals. These animals could not have migrated across the ocean.

Hope that helps!!

AysviL [449]2 years ago

7 0

Continental drift was a theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look alike animal and plant fossils, and similar rock formations, are found on different continents

You might be interested in

Reflecting telescopes are popular because they're

musickatia [10]

The answer is letter C.

Reflecting telescopes are more powerful than refracting telescopes. These are also called as reflectors which serves an optical telescope that uses a single or combination of curved mirrors. These mirrors then reflect light and form an image. It is designed for very large diameter objects and are mostly considered as major telescopes in the field of astronomy. They were used as an alternative for refracting telescopes during the 17th century because they suffer less chromatic aberrations than a refracting telescope does.

7 0

2 years ago

Earth's core is the source of the energy that drives the movement of tectonic

Ostrovityanka [42]

Answer:

B. Convection

D. Conduction

Explanation:

Conduction and convection are the two most prominent processes that helps transfer energy outward to the earth's crust.

Energy within the core is a function of the radioactive decay and frictional heating.
Also, heat that accreted during the formation of the earth is a significant source of internal energy.
The heat is conducted away by the process of convection. This is possible due to temperature differences between different parts of the earth
Conduction is made made possible due to the metallic bodies in the core and other part of the inner earth.

5 0

2 years ago

Read 2 more answers

A 26.2-kg dog is running northward at 3.02 m/s, while a 5.30-kg cat is running eastward at 2.74 m/s. Their 65.1-kg owner has the

REY [17]

Answer:

Angle with the +x axis is θ = 79.599degree

Then the velocity of owner = 1.235m/s

Explanation:

Given that the mass of dog is m1 =26.2 kg

velocity of dog is u1 = 3.02 m/s (north)

mass of cat is m2 = 5.3 kg

velocity is u2 = 2.74 m/s (east )

Mass of owner is M = 65.1 kg

Consider the east direction along +x axis andnorth along +y

momentum of dog is Py = m1 x u1

= 79.124 kg.m/s (j)

momentum of cat is Px = m2 x u2

= 14.522 kg.m/s (i)

Then the net magnitude of momentum is P = (Px2 + Py2)1/2

= 80.445

Angle with the +x axis is θ =tan-1(Py / Px ) = 79.599 degree

Then the velocity of owner is v = P / M = 1.235 m/s

3 0

2 years ago

A string of length 3m and total mass of 12g is under a tension of 160N. A transverse harmonic wave with wavelength 25cm and ampl

scoundrel [369]

Answer:

Explanation:wave=wavelength×frequency,

3 0

2 years ago

A car traveling at 28 m/s starts to decelerate steadily. It comes to a complete stop in 13 seconds. What is its acceleration?

Maru [420]

Acceleration = (change in speed) / (time for the change)

change in speed = (speed at the end) minus (speed at the beginning)

change in speed = (zero) minus (28 m/s) = -28 m/s

Acceleration = (-28 m/s) / (13 sec)

Acceleration = -2.15 m/s²

5 0

2 years ago