Chemistry Middle School

Is this a scientific model? Use complete sentences to explain why or why not



Public Domain

Is This A Scientific Model? Use Complete Sentences To Explain Why Or Why NotPublic Domain

Answers

Answer 1

Answer:

it is

Explanation:

Related Questions

Why is it necessary to see a similar pattern of change in fossils from several places in order to conclude that an extinction happened?

Answers

Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today.

One can learn a lot about the history of life on Earth thanks to fossils. They can help us understand the origins of life and humanity, the evolution of the planet and its environment across time, and the once-connected nature of the continents that are now widely separated.

What are fossils ?

Any surviving remnants, impression, or evidence of a once-living creature from a previous geological epoch is referred to as a fossil. Examples include fossilized bones, shells, exoskeletons, animal or microbe impressions in stone, amber-preserved artifacts, hair, petrified wood, oil, coal, and DNA traces.

Scientists use the fossil record to seek for patterns that may be used to infer which creatures are related to one another, how groups of organisms evolved through time, and how the Earth's climate affected the kinds of plants and animals that could survive for a very long time.

Thus,  a lot about the history of life on Earth thanks to fossils. They can help us understand the origins of life and humanity.

To learn more about fossils, follow the link;

https://brainly.com/question/6867325

#SPJ2

How would the amount of force needed to keep the kite in the air change if it were made out of a heavier material instead of a lighter material?


(A)The amount of force needed would be greater.


(B)The amount of force needed would be the same.


(C)The amount of force needed would go up and down with the kite.


(D)The amount of force needed would be smaller.

Answers

A: the amount of force would need to be greater.
the answer to this question would be A

Please help me answer these questions

Answers

Answer: B, heredity

Explanation:

What type of erosion cause a canyon form?
water
wind
ice

Answers

Answer:Water

Explanation: none

The answer would be ice

Fill in the chart to describe and give examples of physical changes.

Answers

Answer:

here are some examples of physical change!!!

Explanation:

-An ice cube melting into water in your drink.

-Freezing water to make ice cubes.

-Boiling water evaporating.

-Hot shower water turning to steam.

-Steam from the shower condensing on a mirror.

Answer:

Examples:

Melting an ice cube.

Boiling water.

Mixing sand and water.

Breaking a glass.

Dissolving sugar and water

What is unique about obtaining water from an artesian well?

The water is heated by magma or hot rocks.
The water is found in an impermeable layer.
The water is under pressure naturally and no pump is needed.
A mechanical pump must be installed to bring water to the surface.

Answers

Answer:

The water is under pressure naturally and no pump is needed.

Explanation:

C

The water in artesian wells is under natural pressure and requires no pump.

What are artesian wells?

They are wells that contain water that is under natural flowing pressure. Thus, there is no need of using artificial pumps in order to get the water to the surface.

Artesian wells are dug on lands with special geological features that enable the water to flow out under natural pressure.

Artesian wells differ from other types of wells that require mechanical or electric pumps before the water can get to the surface.

More on artesian wells can be found here: https://brainly.com/question/8881413

#SPJ2

2. Calculate: For each object, substitute the values you know into the gravitational potential energy equation to solve for weight. Record each object's weight in the fourth (science)

Answers

Answer:

░░░░░▐▀█▀▌░░░░▀█▄░░░

░░░░░▐█▄█▌░░░░░░▀█▄░░

░░░░░░▀▄▀░░░▄▄▄▄▄▀▀░░

░░░░▄▄▄██▀▀▀▀░░░░░░░

░░░█▀▄▄▄█░▀▀░░

░░░▌░▄▄▄▐▌▀▀▀░░ This is Bob

▄░▐░░░▄▄░█░▀▀ ░░

▀█▌░░░▄░▀█▀░▀ ░░ Copy And Paste Him onto all of ur brainly answers

░░░░░░░▄▄▐▌▄▄░░░ So, He Can Take

░░░░░░░▀███▀█░▄░░ Over brainly

░░░░░░▐▌▀▄▀▄▀▐▄░░

░░░░░░▐▀░░░░░░▐▌░░

░░░░░░█░░░░░░░░█

Explanation:

HELP plz
Are beaches made from erosion or deposition?

Answers

Answer:

Desposition

Explanation:

Answer:

Deposition

Explanation:

Beaches are wave-deposited accumulations of sediment.

Thomas thinks that acceleration means “speeding up.” Explain why this is incorrect.

Answers

Answer:

Explanation:

Thomas is incorrect because acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.

Answer: Thomas is wrong because acceleration is the name we give to any process where the velocity changes. Since velocity is a speed and direction, there are only two ways for you to accelerate: change your speed or change your direction or both.

If the force squeezing two surfaces together is decreased, the force of friction between the two surfaces will most likely what?

Answers

Answer:

Decrease

Explanation:

friction is caused by a continues strong force

The answer is decrease

Help its for science ill give brainilest.

Answers

directly proportional

Answer:

This equation reveals that the kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.

Explanation:

How do organisms form carbon films?

Organisms turn into rock.
Residue is left on rocks when organisms decay.
Hollow forms are left in sediment by decaying organisms.
Organisms leave evidence of their activities, such as footprints.

Answers

Answer:

hollows forms are left in sediment by decaying organisms

Answer:

The answer is C. I just did the quiz and got 90%, but this is not the one I got wrong. Hope this helps!

Explanation:

Drinking water has two sources. It can come from surface water, such as reservoirs or rivers. Or it can come from groundwater where it either naturally surfaces in a spring or where it must be pumped to the surface from a well. Where does your drinking water come from?

Answers

82% of drinking water supplies in Ireland are sourced from surface water (rivers and lakes) and 18% comes from groundwater - it depends where you live (quick g00gle search should answer you question)

Our drinking water comes from the underground sources like wells, hand pumps, etc.

What are the sources of water?

Sources of water are the places from where the water comes to earth for the uses.

In our houses drinking water comes from the underground sources, through the wells, hand pumps, etc. From that source we get natural water for the drinking purposes.

Hence we get water from underground sources.

To know more about water sources, visit the below link:

https://brainly.com/question/898979

#SPJ2

a
a decrease in the number of zebra mussels along the waterways
b
an increase in the number of zebra mussels along the waterways
c
no effect because more time is needed to determine an outcome
d
no change in the number of zebra mussels infecting the waterways

Answers

Could you add a screenshot so we know what's being asked please?

How is salinity affected?
(a) evaporation increases
(c) freezing increases
(d) melting increases
(e) precipitation increases

Where does the energy that causes evaporation come from?
What role does gravity play in the water cycle?
Describe the flow of one molecule of water through the water cycle, beginning in the ocean.

Answers

Answer:

A and E.

Explanation:

 When water evaporates, it leaves the salt. When rain falls, the salt is diluted. The sun causes the  evaporation. The also the sunlight is the energy source, the greatest force propelling the water cycle is gravity. Gravity is the force of attraction between two objects, and Earth’s gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill. Gravity also moves air and ocean water. Also Water travels in a continuous path through Earth called the water cycle. The journey starts in the Earth's oceans. As the Sun heats the ocean, the water evaporates into a gas. The gas meets cooler air, and the gas changes into droplets of tiny water molecules. This process is called condensation. Little droplets of water fall back down to Earth again as precipitation. The precipitation fills up the rivers and various other things and the cycle begins all over again. Now with this being said, there is much more than just this!

     Good luck!

The answer is A hope this helped :)

Which set of diagrams shows a balanced chemical equation?
A: 2 H, 2 O, 2 S and 2 H, 2 O, 3 S. B: 4 H, 2 O, 3 S and 4 H, 2 O, and 1 S. C: 4 H, 2 O, 2 S and 4 H, 2 O, 2 S. D: 2 H, 2 O, 2 S and 1 H, 1 O, 1 S.
A. Diagram A
B. Diagram B
C. Diagram C
D. Diagram D

Answers

Diagram C shows a balanced chemical equation because it has equal number of atoms on both sides of the equation.
The answer is diagram C

Hope this helped

A characteristic property is one that remains the same regardless of the amount of matter that is present.

Which of the following is a characteristic property of matter?

Group of answer choices

Density

Mass

Volume

Weight

Answers

the answer is weight
The answer is weight

What type of eclipse is pictured below?

Answers

The Solar Eclipse................

A cube has a mass of 25g and a volume of 5cm3, what is its density?

Answers

The answer is 0.2 because you have to divide the mass by volume to get density, that is the formula.
Density = mass / volume

Density = 25 / 5

Density = 5 g/cm3

The wastewater in your home goes to one of three places. It can run into a home septic system, it can go to a centralized sewage treatment plant, or it might be directly discharged into a body of water. Where does your water go after it goes down the drain?

Answers

Answer:

Sewage Treatment

Explanation:

I am sorry if I got this wrong but if I did please correct me!

What patterns in the rock layer fossils helped you identify an extinction?

Answers

Often, the rock layers bookending the mass extinction are noticeably different in their compositions. These changes in the rocks show the effects of environmental disturbances that triggered the mass extinction and sometimes hint at the catastrophic cause of the extinction
What the person said bro

PLS HELP THIS IS URGENT LIKE AN ASPA QUESTION THAT NEEDS AND ANSWER PLS HELP
Describe the percentages of electromagnetic energy that comes from the sun?

Answers

i’m pretty sure it’s 80% i had the same question when i did an exam and i got it right so yeah
40% at wave lengths of infrared (IR) or longer. 50% at visible wave lengths and 10% at wave lengths of ultra violet (UV) or shorter.
I hope this is what you were asking.

A boat is traveling to the right at 300 N, the current is going to the left at 600N. What is the net force and direction?

Answers

it would be 800n to the right
i’m pretty sure it’s 300 N but it could also be 800 N . the only reason i thought it was 300 N was because since they go the other direction they should cancel each other out by doing 600 - 300 which is 300 N. but yeah

pls help really easy just search the questions f u need to

Answers

Answer:i cant seee

Explanation:

none

1. because it’s features are very very like the planet mars so is useful for research on the planet. 2. it protects scientists from the extreme temperatures. 3.i’m not sure but i guess they would research how suitable mars is for humans to live on?

Stephen pours a glass of ice water. He gets a phone call before he can drink it. What will happen if he leaves the glass on the counter for 2 hours?

a heat will transfer from the water to the ice until both reach the same temperature
b heat will transfer from the water to the ice until the water is colder than the ice
c heat will transfer from the ice to the water and the ice will stay colder than the
water.
d heat will transfer from the ice to the water and the ice will get warmer than water

Answers

Answer:

d im pretty sure

Explanation:

Fill in the chart to identify how scientists represent matter and chemical changes in matter.

Answers

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side

A chemical symbol is a notation of one or two letters representing a chemical element

A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.  

Match the following vocabulary words with the correct definitions.

1. amount of matter in an object
matter
2. anything which has mass and occupies space
molecule
3. measurement of the pull of gravity on an object
atom
4. molecule with different atoms chemically united
mass
5. chemical combination of two or more atoms
weight
6. smallest unit of matter
compound

Answers

1. Mass
2. Matter
3. Weight
4. Compound
5. Molecules
6. Atom

5. Fill in the chart to identify three types of chemical changes.

Answers

Answer:

1.reaction with energy 2. one substance breaks down 3. reaction to acid and base

CH4 + __O2 → CO2 + ___H2O

balance this equation

Answers

Explanation:

need points bye have good day

Answer:

CH4+2O2→CO2+2H2O

Explanation:

Start with the least common atoms and leave things like H and O to the end.

You need to have the same number of methane reactants as carbon dioxide products because there is one carbon in each. I’ll set them both to 1 for now. O see two things with oxygen on the product side so we will have to juggle numbers a bit to figure out those. There is only H in the water so we’ll go there next. One CH4 gives 2 water molecules so we have that done now. At last we can tackle the O atoms. In two waters there are 2 and in the CO2 there are two more so a total of 4 O atoms in the products so we need two O2 molecules in the reactant side.

Hope this is useful.

“The use of fossil fuels by human’s is heating up the atmosphere” is an example of a law or theory? Explain your answer in at least 3 sentences.

Answers

Answer: Theory

It is a theory which is true because it is not a law. A theory by definition is “ a plausible or scientifically acceptable general principle or body of principles offered to explain phenomena.” A law is “a rule defining correct procedure or behaviour in a sport.“ Therefore since this a scientific fact and it is used/ not against the law it is a theory

Explanation:

Other Questions
Which word would require you to change the y to i before adding the suffix -ed? A. FrayB. StayC. ShyD. Try g Which on the list below is allowed in a Biohazardous waste ility of your PI or LSC to provide you with agent specific training in your lab: A. True B. False Work with microorganisms not known to cause disease in healthy adults is done at: A. Bio safety level 4 B. Bio safety level 3 C. Bio safety level 2 D. Bio safety level 1 Biohazardous waste boxes are provided by: A. Discounted pricing by Sourcing B. Work order by Facilities C. Custodial staff or EHS D. None of the above It is ok to use fuming chemicals in the biosafety cabinet because they are filtered and the air is cleaned before leaving the building: A. True B. False Before beginning work inside a Biological Safety Cabinet do all the following except: A. Disinfect the inside surface of the cabinet B. Turn on blower and let cabinet run for 15 minutes prior to work commencing C. Fill the cabinet with equipment and obstruct air flow D. All of the above You self-transport out of the USA all research samples without documentation: A. True B. False How do I describe end behavior in a polynomial function 6.What would be a primary source from the War of 1812?*O A battle plan from 1813 for the attack on Fort McHenryO A recent novel about the battle of New OrleansA movie on the life of president James MadisonA military history of the war written in 1905 Find the amount of simple interest that $400 would earn at 8% per year by the end 3 1/2 years The opium wars were a series of 19th Century conflicts fought mainly between a) india and japan b) china and japan c) Great britain and china D) great britian and india which one ? solve a variable source x-7=15 Choose the form of the verb tener that corresponds to the subject given.Cuntos aos ___________ t?Question 9 options:tengotienestienetenemostenistienen a quadrilateral with two sets of parallel sides 8) A train enters a curved horizontal section of the track at a speed of 100 km/h and slows down with constant deceleration to 50 km/h in 12 seconds. If the total horizontal acceleration of the train is 2 m/s2 when the train is 6 seconds into the curve, calculate the radius of curvature of the track for this instant. pls hurry im taking the test What is one of the most important aspects that newspapers must take intoaccount when printing an article?A How much the newspaper costsB. How much the audience already knows about an eventc. Whether there are enough quotesD. From whose point of view the article should be written why did the grandmother keep one hand on her waist Refer to the passage,How did Mansa Musa's pilgrimage to Mecca alter Mali'sinternational role? Is mitosis essential to life? If the point (1,3) is translated according to the rule (x,y)(x+4,y2), and then reflected across the x-axis, what are the coordinates of the final image? A. (3,1) B. (3,1) C. (1,3)D. (-3. -1)btw the answer is A, because i took the assignment on gizmos this is just for people who need the answer :> WILL MARK BRAINLIEST Using the function w = 7d + 13, which statement istrue?A. The independent variable is w.B. The independent variable is d.C. The dependent variable is 7.D. The independent variable is 7. who knows what 12x divided by [tex]82\frac{2}{3}[/tex]WeLp ;n; Find the value of x and the measure of the angle labeled 3x.A. X= 14; angle measure is 30. B. X = 10; angle measure is 42. C. X= 14; angle measure is 42. D. x = 10; angle measure is 30. Which terrain is characterized by flat land or gently rolling hills? A. The central uplands. B. the northern highlands. C. The both European plain. D. The alpine region The creation of a Federal Reserve system to combat inflation and monitor the value of the US dollar is the bestexample of which purpose of government?