can someone help me please

Answer:

convection

Explanation:

The heating of the Earth's surface and atmosphere by the sun drives convection within the atmosphere and ocean. This convection produces winds and ocean currents. The greater the pressure differences between a low-pressure area and a high-pressure area, the stronger the winds.

Answer:

Explanation:says these bars are like co vid i get em right off teh bat

Answer: A. The free-moving electrons transmit heat quickly.

Explanation:

Answer:

the free-moving electrons transmit heat quickly.

Explanation:

i just took the test

Answer:

Unbalanced

Explanation:

There is going to be 4 Iron and 4 Oxygen as the end result if I am remembering how to do this correctly so there for 2Fe +O₂→ Fe₃O₄ is unbalanced

Answer: B its most likely

I think it would be d if I am wrong im am sorry

The statement that the atoms in the sand were moving more quickly best describes why the temperature of the sand is increased. The relationship between kinetic energy and temperature is explained here.

The temperature of a body is directly proportional to the kinetic energy. The energy acquired by those molecules which are in motion is called the kinetic energy.

The radiation of the sun falls on a number of objects on our surroundings. The objects absorb this energy till afternoon due to which they become hot.

When Maria walked in afternoon, the sand was hot as its particles have gained the kinetic energy due to which they move rapidly from one place to another. So that the sand feels more hot in the afternoon.

Thus the atoms in the sand were moving more quickly best describes the increase in temperature of the sand.

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Answer:

The products have less potential energy than the reactants in an exothermic reaction.

Explanation:

took the test

Answer:

I think alkali metals will be the answer.

Answer: dust or decay

Explanation:

Answer:

d. 671.6 nm

Explanation:

It is possible to solve the wavelength of a radiation from its frequency -or vice versa- using:

λ = c / f

Where λ is wavelength,

c is speed of light, a constant (2.998x10⁸m/s)

And f is frequency: 4.464x10¹⁴s⁻¹

Replacing:

λ = 2.998x10⁸m/s / 4.464x10¹⁴s⁻¹

λ = 6.716x10⁻⁷m

As 1m = 1x10⁹nm:

6.716x10⁻⁷m * (1x10⁹nm / 1m) = 671.6nm

Right answer is:

Answer:

All liquids are fluids but not all fluids are liquids. Fluids basically describe anything that can flow as a result of a difference in pressure between two points. Liquids on the other hand are a subset of fluids. Liquids are the incompressible fluids. These are the fluids who's density does not change sharply with pressure.

Gases are also fluids, they form the compressible fluids. They do flow as a result of difference in pressure between two points but at the same time they can be compressed or expanded. Their density fluctuates with pressure.

Hence fluids consist of 2 mutually exclusive groups of compressible and incompressible fluids. Liquids are the incompressible fluids and hence form a subset of the more general term fluid.

Answer:

Bacteria

Explanation:

Some plants, specifically leguminous plants form a symbiotic relationship with certain bacteria species called NITROGEN-FIXING BACTERIA in their root nodules. In this relationship, the bacteria species e.g nitrosomonas, nitrobacter etc help the plants fix atmospheric nitrogen (N2) or ammonium compounds, which are forms of nitrogen that are unusable to the plant into nitrates, a usable form.

Therefore, BACTERIA are the organisms found around the roots of these set of plants (legumes) that turns nitrogen from the form we cannot use to the form we can use.

the correct answer is thermal or light

Among the given options, the element that has the lowest ionization energy is beryllium. Thus, the correct option for this question is C.

Ionization energy may be defined as the amount of energy that is significantly required in order to eliminate an electron from an isolated atom or molecule. It is the minimum energy required to remove the most loosely bound electron of an isolated gaseous atom, positive ion, or molecule.

The group of elements that have the lowest ionization energy is known as alkali metals or alkali earth metals. This is because of the shielding effect that the ionization energy decreases from top to bottom within a group. Beryllium is a member of group 2 which has the lowest ionization energy. While Fluorine is said to have the highest ionization energy.

Therefore, the element that has the lowest ionization energy is beryllium. Thus, the correct option for this question is C.

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Answer:

B. The reactants form additional unexpected products.

Explanation:

Answer:

A is the correct answer

Explanation:

Moon pulls the ocean upwards causing tides

The position of a coastal area during a low tide is: it is on a side of Earth that is perpendicular to the Moon.

Whenever the absolute bottom, or the box, arrives at a coast, the coast encounters a low tide. Envision the sea is molded like a ball pointing at the moon. The football's sharp closures address the pieces of the Earth encountering elevated tide and the ball's level sides are the pieces of the earth encountering low tide.

Thus, option A is correct.

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Answer:

In this chemical equation, there are two main elements. Those elements are magnesium (Mg) and oxygen (O). Molecules are a group of atoms bonded together, and in this case, the oxygen molecules is O2, but not 2MgO because there are two different molecules in this compound. Coefficients are a number that multiply an entire molecule, and are also placed in front of it. In this case, O2 has no coefficient, but a subscript of 2. But, every molecule in this equation must have a coefficient and if add a coefficient of 1 to the oxygen molecule, it does nothing to the overall balancing of equations.

So, the answer: coefficient to the oxygen molecule is 2.

Have a great day/night, stay safe, and merry christmas!

Answer:

im pretty sure its groundwater just read this and see the answer

Explanation:

The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.

Answer:

True

Explanation:

IT IS TRUE WIWJJWOWIWHW

Answer:

CH4(g) + 2O2(g) -------> CO2(g) + 2H2O(g)

Explanation:

Even though the question is incomplete because the equations are missing. However, one thing that is clear from the question is that the reaction is a combustion reaction.

A combustion reaction is a type of reaction that produces heat and light. The mixture of methane and oxygen yielded a brief, large flame which shows that combustion has taken place according to the equation shown above.

Answer: flood

Explanation:

The type of reaction that occurs when Carbon-14 changes to Carbon-12 is fission reaction. The correct option is D.

Nuclear fission is the operation by which an atom's nucleus splits into two or several smaller nuclei.

Even by radioactive decay's energetic standards, the fission process frequently produces gamma photons and releases a large amount of energy.

Nuclear energy can be used to generate electricity, but it must be liberated from the atom first. Atoms are split to release energy during the nuclear fission process.

The decay of carbon-14 is another nuclear reaction that we can use. Carbon is a necessary element for living organisms that constantly exchange carbon, the majority of which is carbon-12.

However, some of those carbon atoms are carbon-14 isotopes.

Thus, the correct option is D.

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Answer:

Gamma, Infrared,microwave,Radio, visible, ultraviolet,X-ray

Ranking these parts of electromagnetic spectrum from lowest energy to highest energy is as follows ;

The longer the wavelength of a section of the EM spectrum the lower the energy carried while the shorter the wavelength and more the energy the electromagnetic wave will contain.

Hence ranking the electromagnetic waves in the electromagnetic spectrum from the lowest energy to the highest energy is ; Radio, Microwaves, Infrared, Visible, Ultraviolet, X-ray, Gamma waves.

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Answer:

2. The factor that is different in an experiment.

Explanation:

a variable is able to change because it is an element, feature, or factor that is liable to vary or change

Answer:

I think there are like about 5.50

Explanation:

Answer:

8.677

⋅

10

8

g

Explanation: