As the polar ice caps melted and the sea level rose more than 300 feet above present day levels. A sharp drop-off that was left behind by this ancient shoreline can now be seen. This sharp drop-off called a ___________________is typically visible when crossed by a river because often there will be rapids or waterfalls. A) Fall Line B) Sand Hills C) Coastal Plain D) Barrier Islands

Answers

Answer 1
Answer:

Answer:

Option A) Fall Line

Explanation:

A fall line is a geological boundary that is formed between an upland region and a plain beneath. Usually, the regions are identified by falls or rapids when rivers and streams cross or meet.

One interesting feature is that the fall lines are formed when rivers meander through regions of weak rock structure. Normally, the rock structure is sedimentary rock structure (layered). The rivers tear into the earth by erosion, abrasion and attrition.

In addition, plate tectonics play an important role. The movement of the earth's plates causes the falls. Some are formed by the rapid freeze-thawing action of large blocks of ice.

Answer 2
Answer:

Answer: I need help:(

Explanation:


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Whenever the motion of an object change,____ has been applied.
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What is the apparent change in frequency of waves due to the motion of a source? Photoelectric effect Prismatic change Doppler effect Wavelength variability

Answers

Answer: Doppler effect

Explanation:

The Doppler effect refers to the change in a wave perceived frequency when the emitter of the waves, and the receiver (or observer in the case of light) move relative to each other.  

In other words, it is the variation of the frequency of a wave due to the relative movement of the source of the wave with respect to its receiver.  

Another important aspect is that the effect occurs in all waves (including light and sound). However, it is more noticeable to humans with sound waves.

The Doppler effect is the apparent change in frequency of waves due to the motion of a source.

What is gravitational field intensity?​

Answers

Answers :

The gravitational field intensity (EG) or (g) is the force on a unit mass at a point in the field.  

Since the force (F) on a body of mass m in a gravitational field of a body of mass M = GMm/r2 .

you can see that the force per unit mass is given by F/m. So:

Gravitational Field Intensity (EG) = (g) = F/m = GM/r2

The units for EG are N kg -1 or since F = ma, F/m = a and so EG may be expressed in ms -2

Hope this will help you :))

Do give this answer a brainliest :D

URGENT HELP!Rank the states of matter from weakest to strongest intermolecular forces
Question 1 options:


gas, solid, liquid


gas, liquid, solid


solid, liquid, gas


solid, gas, liquid


The state of matter with an indefinite shape and definite volume is _____.
Question 3 options:


Solid


liquid


gas


plasma


plasma


 Deposition and condensation is an example of an endothermic reaction
Question 7 options:
True
False

Which one of the following statements best describes the particles in a gas?
Question 8 options:
They are very close together and are able to vibrate.
They are stationary and not able to vibrate
They are moving very slow and are far apart.
They are moving very fast and are far apart.

Answers

1) The forces of molecules is how strong they are being held together. Now, we know that solid is the last one, because it's particles are held CLOSELY and VERY TIGHTLY together, which is why it has a definite shape.And last of all, a gas's particles are held freely, which is why it has no shape. So the answer would be:- gas, liquid, solid

3) The state of matter that does not have a definite shape, but has a definite volume is a liquid. So the answer is :- liquid

7) False, an endothermic reaction is when it absorbs energy, and as we know that in a chemical reaction as the following, it tends to be an exothermic reaction, meaning that is releases energy. So the answer is:- FALSE

8) Gases have particles that are far apart (freely) and move fast. So the answer is:- They are moving very fast and are far apart. 


Question 1'sanswer is gas, liquid, and solid.

Why? Think about it - solids hold better than any of those two - And gasses hold the weakest and liquid goes in the middle :)

Question 3 is liquid, because if you put like, we'll say water, if you put water into a round bottle it would look round, right? It would go for any other shaped bottle - It would look like that same shape. But you can't change the volume - It will always be the same

Question 7 is  FALSE - They're actually exothermic reactions. :)

Last question 8 - They are moving very fast and are far apart -

Note that the closer together molecules are together, the harder something is :D

↑   ↑   ↑  Hope this helps! :D

Barometers have long been used to predict the weather. Jay and Jeff were responsible for recording the class weather data each day in March. One day, they noticed that there was a rapid change in the barometric pressure. The barometric pressure dropped down very, very quickly. What type of weather could Jay and Jeff expect soon? A) fog B) rain C) clearing D) drop in temperature

Answers

Answer:

B) rain

Explanation:

The barometer is a device that is used to measure atmospheric pressure and, consequently, the height at which someone rises, as well as to approximately predict atmospheric changes. Thus, a rising barometer indicates an increase in air pressure, whereas a falling barometer indicates a decrease in air pressure.

In environments with low atmospheric pressure and, therefore, heat, the heated air tends to rise and, when reaching higher altitudes, condenses, forms clouds and precipitates. In this situation, the barometric pressure drops very, very quickly, indicating that a rain is coming.

Answer:

B

Explanation:

You would have rain. You would have clouds, precipitation, and strong winds.

Sachi wants to throw a water balloon to knock over a target and win a prize. The target will only fall over if it is hit with a force of 0.035 N. The water balloon has a mass of 11.4 grams. How fast will Sachi have to make the water balloon accelerate to hit the target with enough force and win the prize?Round the answer to the nearest one tenth m/s2.
The water balloon must accelerate m/s2.

Answers

Answer:

3.1 m/s²

Explanation:

Given:

Mass of the balloon (m) = 11.4 g = 0.0114 kg ( 1 kg = 1000 g)

Force acting on the balloon (F) = 0.035 N

Acceleration with which the balloon must be hit (a) = ?

Now, we know that, from Newton's second law, net force acting on an object is equal to the product of its mass and acceleration.

Therefore, framing in equation form, we have:

F=ma

Rewriting in terms of acceleration 'a', we get:

a=(F)/(m)

Now, substitute the given values and solve for 'a'. This gives,

a=(0.035\ N)/(0.0114\ kg)\n\na=3.07\approx 3.1\ m/s^2(Nearest\ tenth)

Therefore, the acceleration of the water balloon to reach the target must be equal to 3.1 m/s².

Answer:

3.1

Explanation:

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In the atmosphere water vapor condenses to form clouds.   Please select the best answer from the choices provided T F

Answers

Answer: The given statement is True.

Clouds are formed due to condensation of water vapors. Condensation can be described as a process of change of gaseous form of water (that is water vapor) into liquid form.

When sunlight strikes various aquatic bodies, water is heated up and it rises high in the atmosphere in the form of water vapors.

When these vapors meet a lower temperature in the atmosphere, they cool and the air loses its capacity to hold them.

Due to this, vapors condense and form clouds.

Thus, given statement is True.

true is the correct answer