What is a magnetic reversal

Answers

Answer 1

Answer: A change in the Earth's magnetic field resulting in the magnetic north being aligned with the geographic south, and the magnetic south being aligned with the geographic north. Also called geomagnetic reversal.

Related Questions

What is the order of steps through which a particle of gaseous water would travel as it made one complete trip through the water cycle
Al2(SO4)3 + BaCl2 balanced equation
How would the kinetic energy of a 12,000 kg train compare with the kinetic energy of a 900 kg compact car if both were traveling at the same speed?A. the trains kinetic energy would be equal to the cars kinetic energy. B. The trains kinetic energy would be greater than the cards kinetic energy. C. The trains kinetic energy would be less than the cars kinetic energy.
What Is a covalent bond
How are heterogeneous and homogeneous mixtures separated?

In a single displacement reaction between sodium phosphate and barium, how much of each product (in grams) will be formed from 10.0 grams of barium?

Answers

Answer:

A. 3.36g of Na.

B. 14.62g of Ba3(PO4)2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

3Ba + 2Na3PO4 → 6Na + Ba3(PO4)2

Next, we shall determine the mass of Ba that reacted and the mass of Na and Ba3(PO4)2 produced from the equation.

This is illustrated below:

Molar Mass of Ba = 137g/mol

Mass of Ba from the balanced equation = 3 x 137 = 411g

Molar mass of Na = 23g/mol

Mass of Na from the balanced equation = 6 x 23 = 138g

Molar mass of Ba3(PO4)2 = (3 x 137) + 2[31 + (4x16)] = 411 + 2[31 + 64] = 601g/mol

Mass of Ba3(PO4)2 from the balanced equation = 1 x 601 = 601g

Summary:

From the balanced equation above,

411g of Ba reacted to produce 138g of Na and 601g of Ba3(PO4)2.

A. Determination of the mass of Na produced by reacting 10g of Ba.

From the balanced equation above,

411g of Ba reacted to produce 138g of Na.

Therefore, 10g of Ba will react to produce = (10 x 138)/411 = 3.36g of Na.

Therefore, 3.36g of Na is produced.

B. Determination of the mass of Ba3(PO4)2 produced by reacting 10g of Ba.

From the balanced equation above,

411g of Ba reacted to produce 601g of Ba3(PO4)2.

Therefore, 10g of Ba will react to produce = (10 x 601)/411 = 14.62g of Ba3(PO4)2.

Therefore, 14.62g of Ba3(PO4)2 is produced.

Scientists classify rocks into three different types. What is the main basis for the classification system they chose?

Answers

Answer:

The main basis for the classification system is the way rocks were formed. With these criteria there are three different types of rocks:

Igneous rocks : formed through the cooling and solidification of magma or lava

Sedimentary rocks : formed by the accumulation or deposition of small particles

Metamorphic rocks: formed by the transformation of existing rock types by heating and pressure

1. color of the rock
2. shape of the rock
3. how the rock is formed
4. who discovered the rock
that is it

(3 Points)Which statement correctly compares radio waves and microwaves?

A. Radio waves have a higher frequency than microwaves.

B. Radio waves have shorter wavelengths than microwaves.

C. Radio waves have lower radiant energy than microwaves.

D. Only radio waves are used in communication.

Answers

Answer:The correct answer is option C.

Explanation:

Radio waves and microwaves both are the examples of electromagnetic waves.

Radio waves: These are waves with lowest frequency in the electromagnetic spectrum with longest wavelength.

Microwaves : These are the second lowest frequency waves in the electromagnetic spectrum with wavelength shorter than radio waves.

$E=h\nu$

E = Energy of an electromagnetic wave

$\nu=(c)/(\lambda )$

$\nu \propto (1)/(\lambda )$

$E\propto (1)/(\lambda )$

$\nu$ = Frequency of the electromagnetic wave

$\lambda$ = Wavelength of the electromagnetic wave

Radio waves with longest wavelength has lower radiant energy than the microwaves.Hence, correct option is C.

Some one please help me on this.

Answers

The mould and cast fossil is Option B.

The carbon film fossil is Option C.

The Amber fossil is Option A.

The ice fossil is Option D.

Explanation:

Mould and cast fossils are formed when an organism or any organic object gets buried inside sediment and gets decomposed off, leaving an empty space between the sediments which are occupied by different minerals like carbon, calcium, silica etc. Thus, this mineral takes the shape of that decomposed object and stays for years.

The carbon film fossils are those fossils which take long time to form and are difficult to recover as well. They are formed when some organic substance gets very deep into Earth's surface and gets burned by the interior lava into only a thin layer of carbon.

The amber fossils are very common which are formed when the living organisms get stuck in plant resins and dies, which are enclosed into the plant's resin and are recovered thousands of years after.

The ice fossils aren't actually fossil because in very cold regions, the dead bodies often don't decompose but remain as it is for years. Thus the soft tissues are also recoverable after many years.

Please help solving number 48.

Answers

a magnet can attract cobalt and nickel but not aluminum nor copper

What happens when you touch cold ice with your warm hand? a. heat only transfers from the ice to your hand b. heat only transfers from your hand to the ice c. heat transfers from the ice to your hand and from your hand to the ice d. heat does not transfer between the ice and your hand

Answers

The answer is B. -heat only transfers from your hand to the ice

B heat only transfers from your hand to ice

Other Questions

Iron is produced in a blast furnace.Explain why most of the iron produced in a blast furnace is converted into steels.

Which tool or tools would you use to measure and compare the mass of a cup of fresh water and a cup of salt water

Which generally occurs as temperature increases?

Which is easier to observe the physical or chemical properties of an object? Support your answer with evidence