What evidence do scientists have that Earth has been hit by large objects, like asteroids, in the past? Check all that apply.
Answers
Answer:
layer of burned organic matter
change in average global temperature
mass extinctions
Explanation:
Asteroids are external rocks/objects that hit the surface of the earth.
Let's check the options:
1- layer of volcanic ash: This option is rejected as volcanoes are caused as a result of the internal heat and combustion in the layers of the earth. Therefore, volcanoes are independent of external bodies as asteroids.
2- layer of burned organic matter: This option is accepted. When bodies , as asteroids, hit the earth, their clash with the earth's surface usually lead to burns and/or fires leading to layers of burnt organic matter that is found on the surface of the earth and its underlying layers.
3- change in average global temperature: This option is accepted as these bodies usually have different temperatures than that of the earth's climate. Therefore, when they penetrate the earth's atmosphere, they can lead to a change in the global temperature.
4- mass extinctions: This option is accepted as the collision of these bodies with the earth's surface can lead to destruction of creatures/objects which may lead to mass extinctions.
5- earthquake activity: This option is rejected as earthquakes are formed as a result of the motion of plates within the layer's of the earth and not as a result of external bodies.
Hope this helps :)
Related Questions
Which material is the most dense?
Answers
Why might a rubber raft burst if it is left in the sun on a summer day?
Answers
Answer: This is because of increase in air pressure inside the rubber raft.
Explanation:
According to Gay-Lussac's Law: 'The pressure of the gas at constant volume is directly proportional to the temperature in Kelvins'.
[tex]Pressure\propto Temperature[/tex](at constant Volume)
or [tex]\frac{Pressure}{Temperature}=constant[/tex]
So, when we left rubber raft in a sun on a summer day temperature of the air inside the rubber raft increases due to which pressure of an air inside the rubber raft also increases. And by this increase in pressure rubber raft bursts.
How is a watershed related to a river system
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Answer:
The stream mouth is where a waterway streams into a bigger waterway, for example, another stream, a lake, or a sea. A watershed limit, likewise called a seepage isolate, marks the external most point of confinement of a watershed. A watershed is a tract of land depleted by a waterway and its tributaries.
A watershed, or a drainage basin, captures all the water from rain or snow fall, and directs it into a river or stream. A river system includes a main river and its tributaries. Together, the watershed and the river system form part of the hydrologic cycle, where a watershed feeds the river system, contributing to the overall flow of water on the earth's surface.
Explanation:A watershed is closely related to a river system as they are both integral parts of the hydrological cycle. A watershed, also known as a drainage basin, refers to an area of land where all of the water that falls as precipitation either drains off into the same place, typically a river, lake, or ocean. It captures the rainfall and snow melt and directs it into a single point, say a river or a stream.
On the other hand, a river system includes a river channel along with its tributaries (smaller streams or rivers that flow into the main river). The river system serves as the main transportation route of the water from the watershed. So, a watershed feeds a river system and together they contribute to the overall flow of water on earth's surface. For instance, the Amazon River system is fed by multiple small and large watersheds covering a large area of South America.
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Why doesn't peppermint improve your reaction?
Answers
Peppermint in many forms such as tea, candy, and oil can be used to help improve mental awareness. The menthol “stimulates the Hippocampus area of the brain which controls mental clarity and memory. The odor triggers you to wake up and pay attention.” This explains why many people believe that peppermint makes you smarter, when really it makes you more alert.
Peppermint also has the ability to improve athletic performance as well as helping to improve reaction times.
Overall, peppermint can improve your mental awareness but, no, it does not actually make you smarter.
Derrick just got home from playing soccer on a muddy field. He is curious how different brands of laundry detergent compare in removing mud from clothes, so he sets up an experiment. In one laundry load, he puts his muddy socks with Brand A detergent. In the next load, he puts his muddy jersey with Brand B detergent. In the final load, he puts his muddy shorts with Brand C detergent. Afterward, he noticed that the jersey came out the cleanest. He concludes that Brand B is the best detergent for removing mud from clothes. Is his conclusion valid? A. No; Derrick was biased toward Brand B. B. No; there were too many variables in the experiment. C. No; there were too many controls in the experiment. D. Yes; the experiment was set up correctly.
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Number 10 plz :D tysm!!!
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Answer:
B) Two tectonic plates pullaway from each other, forming a rift valley or midocean ridge.
Hope this helps u! ;)
-Ari.
Which motion is the best model to use to illustrate passive transport?
Going over a hill
Going around a carousel
Going down a slide
Going through a tunnel
Answers
Answer: going down a slide.
Justification:
The term passive transport is used to the describe the movement of particles in circumsantaces that do not require the use of energy.
It is mainly used for some physical process related to particles like diffusion or osmosis.
For illustrative purposes. it is compared with the movment of an object down a hill (or a slide as in the case of this question) as the object will go from high to low without requiring the use of energy.
PLEASE HELP ME
Tyler found his iguana playing with a soccer ball in the basement that contained 400kPa of pressure, held 3L and was at 300K. Devin took the ball in the garage where the pressure in the ball became 350kPa and the temperature was 250K. How much space did the ball take up? Question 14 options:
1. 2.9 L
2. 2.0 L
3. 2.8 L
4. 2.5 L
5. 2.7 L
Answers
The ball took up 2,9L
To solve this problem, we should apply the ideal gas law and clear for n (the number of moles), as this value doesn't change when Devin takes the ball to the garage:
[tex]n= \frac{P1*V1}{RT1}=\frac{P2*V2}{RT2}[/tex]
Now, we should clear this equation to find V2, as this is the value we are looking for:
[tex]V2= \frac{P1*V1*T2}{P2*T1}= \frac{400kPa*3L*250K}{350kPa*300K}=2,857L[/tex]≈2,9L
Have a nice day!
What is The temperature at which a substance changes from a liquid to a gas
Answers
You observe heat, light, and sound released by a chemical reaction. This reaction is (2 points)
absorbing energy
consuming energy
exothermic
endothermic
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Which is the Lewis structure of H3PO4
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I do not know if you understand it but this is what my science book said.
If the bright lines in the spectrum of oxygen are matched by lines in the dark-line spectrum of the sun, what does that indicate? A. The gaseous outside of the sun contains oxygen. B. There is no oxygen in the sun. C. The sun burns its fuel using oxygen. D. The spectrum can be detected only by a radio telescope.
Answers
Answer:
the answer is A.
Explanation:
If the bright lines in the spectrum of oxygen are matched by lines in the dark-line spectrum of the sun, this indicate that the gaseous outside of the sun contains oxygen.
What is spectrum?In physics, the term "spectrum" refers to the variation in light intensity with frequency or wavelength. A spectroscope is a device created for visual spectral observation, while a spectrograph is a device that captures or maps spectra.
Since all wavelengths are present, the spectrum of luminous solids is considered to be continuous. In contrast, the spectrum of burning gases is known as a line spectrum since it only emits a small number of wavelengths. If the bright lines in the spectrum of oxygen are matched by lines in the dark-line spectrum of the sun, this indicate that the gaseous outside of the sun contains oxygen.
Therefore, the correct option is option A.
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There is an old story about a king and his crown. The king hired a goldsmith to make him a crown a pure gold. After the king received the crown, he started to worry that the goldsmith might have cheated him. He thought maybe the goldsmith didn't use pure gold, maybe he used a mix of metals to save money. The king asked a man named Archimedes to figure out if the crown was pure gold or not. Archimedes reasoned that the density of a lump of gold and a crown of pure gold would be the same. How could he prove if that crown was pure gold without melting or otherwise destroying the crown?
Answers
Which statement correctly describes what happens when water turns to steam in terms of energy?
A. the water absorbs energy which causes chemical bonds to break, changing water to steam.
B. the water releases energy which causes chimical bonds to break, changing water to steam.
C. the water absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a liquid to a gas. D. the water absorbs energy which causes the water molecules to have less kinetic and potential energy, changing their configuration from a liquid to a gas.
Answers
helpppp me plzz....
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2.a) warm air is lighter than cold air so thats why it's warmer upstairs than downstairs
3.d) Conduction is the process by which heat energy is transmitted through contact with neighboring molecules
4.d) the lamp radiates heat throughout the plants
How can we find the volume of this fish tank? Please I needed but Good
Answers
Answer:
The correct answer is find the number of 1 foot cubes that fill the fish tanks.
Explanation:
Volume is defined as amount of space occupied by an object.
Number of 1 foot cubes lying on the length of fish tank ,l= 5 feet
Number of 1 foot cubes lying on the width of fish tank,w = 3 feet
Number of 1 foot cubes lying on the height of fish tank ,h= 3 feet
Volume of the cuboid fish tank will be :
The volume of fish tanks id 45 cubic feet.
Explanation:
To find the fish tank's volume, multiply its length, width, and height, represented by: Volume = Length × Width × Height, which is 5 multiplied by 3 multiplied by 3, which yields 45 cubic feet.
To determine the volume of the fish tank, envision it as a rectangular prism and determine the dimensions based on the arrangement of 1-foot cubes. The length, width, and height are given as 5 cubes, 3 cubes, and 3 cubes, respectively. By multiplying these dimensions, you calculate the total volume of the tank.
Each dimension represents the number of cubes stacked along that axis, illustrating how they fill the three-dimensional space. This multiplication reflects the total number of cubic feet the tank can contain. Once multiplied, the result represents the volume of the fish tank, providing insight into its capacity in cubic feet.
Radio stations identify themselves by their position on the radio dial such as 90.1 and 93.3. This number is based on the number of waves or cycles that pass a fixed point in a specific unit of time. To which property of a wave does this identification number refer? A. loudness B. amplitude C. wavelength D. frequency
Answers
How much heat is lost when 350g of iron cools from 54.1 to 22.4oC? (The specific heat of iron is 0.450 J/g oC)
Answers
Mass of iron = 350 g, specific heat capacity = 0.450 J/gC while;
change in temperature = 54.1 - 22.4 = 31.7
Hence; heat = 350 × 0.450 × 31.7
= 4992.75 J or 4.993 kJ
When both the speed and direction of an object’s motion is known, what else is known?
the distance the object has traveled
the velocity of the object
the acceleration of the object
the average speed of the object
Answers
Velocity is equivalent to a specification of its speed and direction of motion, for example 100 km/h to the east. Velocity is a physical vector quantity (measured in metres per second) and need magnitude and direction to define it, for example 100 metres per second east.
the correct answer the velocity of the object i will edit more just have to find me notes
A person who is interested in the brain and its functions might pursue a career in
A) endocrinology
B) gene therapy
C) neuroscience
D) sports medicine
Answers
Answer:
Explanat C nutro sience srry i f i did not help
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH–] is 1 x 10–11 mol/L. Is this solution acididc, basic, or neutral? Show your work. (3 points)
Answers
kw= 1 x10^-14
OH-= 1 x10 ^-11
(H+)= KW / OH-
concentration of H+ = (1x10^-14) /.(1 x 10 ^-11) = 1 x10 ^-3
Ph= -log (H+)
PH=-log ( 1 x 10 ^-3) = 3 therefore the solution is acidic since the PH less than 7
Many dinosaur bones are radioactive. Because of this, they are usually painted over with lead paint. Postulate A reason for why some of these very old fossils would have a radioactive signal and where it might be coming from?
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what is humus?????????????
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Can you please answer 11-20 thanks
Answers
Pressure tells how much force is on an area.
12. The pressure exerted by Earth's atmosphere is air pressure.
13. The density of an object is its mass divided by its volume.
14. A(An) hydraulic device uses fluid to transmit a force.
15. The flow of smoke up a chimney is partly explained by Bernoulli's principle.
True or False questions
16. Water pressure increases as depth increases. True
17. Air pressure is measured using a barometer. True
18. The buoyant force acts in a downward direction. False
19. The buoyant force on an object is equal to the weight of the fluid the object displaces. True
20. Archimedes' principle explains how an airplane flies. False
What is the gravityThe buoyant force is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. It is caused by the difference in pressure between the top and bottom of the object. The pressure at the bottom of the object is greater than the pressure at the top because there is more fluid above it pushing down.
The magnitude of the buoyant force is equal to the weight of the fluid displaced by the object. This is known as Archimedes' principle. For example, if you place a ball in a cup of water, the buoyant force on the ball will be equal to the weight of the water that the ball displaces.
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see text below
Completion
Read each word in the box. In each sentence below, fill in the correct word or words. Not all words will be used.
mass
Bernoulli's principle
force
air pressure
gravity
hydraulic device
11. Pressure tells how much ---is on an area.
12. The pressure exerted by Earth's atmosphere is -----------
13. The density of an object is its ------------divided by its volume.
14. A(An) ----------uses fluid to transmit a force.
15. The flow of smoke up a chimney is partly explained by -----
True or False
If a statement is true, write true. If it is false, write false.
16. Water pressure increases as depth increases.
17. Air pressure is measured using a barometer. 18. The buoyant force acts in a downward direction.
19. The buoyant force on an object is equal to the weight of the fluid the object displaces.
20. Archimedes' principle explains how an airplane flies.
Who can use scientific inquiry and what does it involve?
Answers
Answer:
Sample Response: Scientific inquiry is the process used to ask and answer questions about the natural world. It can be used by anyone and involves asking a question, performing an investigation, collecting evidence, providing explanations, and communicating the results.
Explanation:
sample from Edge
Which of the following is true about an atom of iron and an atom of copper?
1 They have different masses.
2 Both have the same properties.
3 They have an equal number of protons.
4 Both have different types of sub-atomic particles.
Answers
OPTION 1 AND 4.
Iron and copper atoms differ in their atomic mass and the number of their sub-atomic particles. They do not exhibit the same properties or share an equal number of protons.
Explanation:The question is asking about the key differences between an atom of iron and an atom of copper. Here are the correct observations:
They have different masses. The atomic mass of iron is 55.845 while the atomic mass of copper is 63.546.Both have different types of sub-atomic particles. Although iron and copper have the same types of sub-atomic particles (protons, neutrons, and electrons), the number of these particles in each atom is different. Iron has 26 protons while copper has 29 protons.However, it's incorrect to say that both atoms have the same properties or have an equal number of protons as each atom's properties and number of protons are dictated by its atomic number and arrangement of electrons.
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A (n) blank is a movement or trembling of the ground that is caused by a sudden release of energy when rocks move along a fault. Plz helpppp
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Organisms can pass on genetic information through asexual or sexualreproduction.Which if the following statements best describes how asexual reproduction differs sexual reproduction
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Asexual reproduction involves one parent and produces genetically identical offspring, while sexual reproduction involves the combination of genetic material from two parents to produce genetically varied offspring. Asexual reproduction allows many offspring to be produced quickly, whereas sexual reproduction provides genetic diversity, potentially increasing offspring survival rates in changing environments.
Explanation:The main difference between asexual and sexual reproduction lies in the biological processes and resulting offspring. Asexual reproduction involves one parent and produces offspring that are genetically identical to that parent, while in sexual reproduction, genetic material from two parents combine to create offspring with genetic variation. Asexual reproduction methods include fission, budding, and fragmentation, making it possible for a single individual to quickly produce a large quantity of offspring that are ideally adapted to a stable environment.
In contrast, sexual reproduction creates a greater genetic diversity in offspring, providing them a higher chance of survival in changing or unpredictable environments. It typically includes processes such as internal or external fertilization of the female's eggs by the male's sperm. However, species that reproduce sexually need to maintain two types of individuals, males and females, which could be a disadvantage compared to asexual reproduction, especially when considered in terms of population growth and colonization of new habitats.
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Can you please answer 12 and 13 thanks
Answers
13. When neither hemisphere is tilted toward nor away form the sun, it is called equinox. At this time, daylight and night time is as long as each other, or they are both 12 hours long in both hemisphere.
What is the difference between a simile and a metaphor?