Picture yourself around a campfire. Which of these would be an example
of convection?
A metal rod would not be a good choice for roasting marshmallows because metal transfers
thermal energy.
O As the air around the campfire is heated and becomes less dense, it rises and
moves upward.
A metal rod would not be a good choice for roasting marshmallows because
metal transfers thermal energy.

Answers

Answer 1

Answer:

O As the air around the campfire is heated and becomes less dense, it rises and moves upward.

Explanation:

This is true because, the convection transfer needs the particle of elements to transport the heat from where it is in abundance to where it is in less abundance. Just like a water boiling becoming hot at the point closer to the fire than the top of the pot, so also will the air around campfire transfer heated air from the place closer to the campfire to upwards aware from the fire.

Answer 2

Convection is the flow of air around the campfire when it is heated and the decrease in density as it rises upward in the atmosphere. Thus, the correct option is C.

What is convection of heat?

Convection is the transfer of heat from one place to the other due to the movement of fluids present in it. It is a distinct method of heat transfer in systems. The convective heat transfer involves combined processes of conduction and advection in a system and its surrounding. Convection is the dominant form of heat transfer in liquids and gases.

The thermal radiation in the fire is mostly in the form of infrared waves and visible light. However, the campfire heat transferred via convection shoots straight up in the sky and never reaches to the ground level.

Therefore, the correct option is C.

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Related Questions

Pedigree D is most likely X-linked dominant. What is/are the genotype(s) of the parent(s) that transmitted the mutant allele(s) to their offspring

Answers

Answer and Explanation:

Note: In the attached file you will find the pedigree and the genotypes of each member.

Parentals)  XDXd    x     XdY

The female is heterozygous for the trait, transmitting the mutant allele The male is not affected.

According to the pedigree, they had the following progeny:

XdXd healthy femaleXdY healthy maleXDXd affected female (this individual transmitted the mutant allele)XDY affected male (this individual transmitted the mutant allele)

-Both healthy individuals mated with another two healthy individuals. Their whole progeny was healthy.

-The affected female (XDXd) mated with a healthy male (XdY), and they produced 100% healthy individuals

-The affected male (XDY) mated with a healthy female (XdXd) and they had three affected females, XDXd.

4. The top part A of the flask-shaped reproductive organ X in the flower of a plant secretes a surgery substance
into its lower part B which goes towards the bottom part of the flask-shaped organ. When a tiny grain D
coming from the top part E of another reproductive organ Y in the flower falls on part A, it grows a long
tube F through the organ X in response to the sugary substance and reaches the bottom part C of flask-
shaped organ to carry out fertilisation.
(a) What is (i) organ X, and (ii) organ Y, inside the flower ?
(b) Name parts (1) A (ii) B, and (iii) C, of flask-shaped organ.
(c) Name (i) grain D, and (ii) part E of organ Y.
(d) Name the tube F.
(e) What is the phenomenon of growing a long tube in response to a sugary substance in the process of
fertilisation in a flower known as ?​

Answers

Answer:

X- pistil

Y- stamen

A-stigma

B-style

C-ovary

D- pollen grain

E- anther

F- pollen tube

Although Natasha is a brilliant pianist snd highly acclaimed ballet dancer, her high school intelligence test scores were only average. What does Natasha’s experience suggest regarding the nature of intelligence

Answers

Answer:

It suggests she have bodily-kinesthetic intelligence according to Howard Gardener's theory of multiple intelligences.

Explanation:

Howard Gardener's theory of multiple intelligences suggests that there are eight different types of intelligence instead of a single generalized one. Bodily-kinesthetic intelligence is one of them that is the ability to skilfullly use the body or its parts.

Natasha's experience tells that she may be high on this specific kind of intelligence as athletes like her and dancers like her are high on bodily-kinesthetic intelligence.

Do neritic nones have sudden changes

Answers

Answer:

They face pounding waves as well as sudden changes in water levels and temperature that occur with high and low tides. Why is the neritic zone particularly in living things? It is rich in organisms because sunlight passes through its shallow water enabling photosynthesis to occur.

Explanation:

Select the correct answer.
Jayden is taking a test. He has to write why scientists support the theory that life began near hydrothermal vents in the ocean. Which point should he include in his answer?
A.
Hydrothermal vents were closest to ocean surface, and therefore could receive oxygen.
B.
Oceans were dry and only had water near the hydrothermal vents in the earlier ages.
C.
Even today, all life forms are first born near hydrothermal vents and they later migrate to land.
D.
Fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.

Answers

Answer:

The answer is; D

Archaebacteria are early life forms on earth. They utilized the process of chemosynthesis to make organic molecules from inorganic molecules and for energy. The word archae means ‘ancient’ life forms. These single-celled organisms evolved around sulfur-rich environments of the hydrothermal vents.

Answer:

D

Explanation:

HELPP PLEASE!!

What is a subjective claim?
A claim based in personal opinion.
A claim that covers two subjects or topics.
A claim based on verifiable fact.

Answers

Answer:

A

Explanation:

its a expression of belief, opinion, or personal preference

Which is one of the purposes that technology serves in science?
O It illustrates complex systems.
It helps create new science problems.
It assists in data collection.
O It simplifies representations of real objects.

Answers

Answer:

Explanation:

It illustrates complex systems

Answer:

C) It assists in data collection.

Explanation:

trust me bro

What organelle is attached to the Rough ER

Answers

Answer:

Ribosomes

Explanation:

Answer:

The ribosomes.

Explanation:

1 Sustainability means: A. Meeting present needs without compromising needs of future generations B. Meeting present needs without the concern for future generations C. Ignoring the needs of current generations to help future generations D. Sustaining fish at a certain depth in the ocean 15 (1 Point)​

Answers

Answer:

A

Explanation:

Which statement best describes the movement of sodium ions across the cell membrane?
They are hydrophilic, so their movement needs to be facilitated by transport proteins.
They are hydrophobic, so their movement needs to be facilitated by transport proteins.
They are hydrophilic, so they easily pass across the cell membrane on their own.
They are hydrophobic, so they easily pass across the cell membrane on their own.

Answers

Answer: A. They are hydrophilic, so their movement needs to be facilitated by transported proteins.

Explanation:

Is the cladogram pictured here correct? Does it accurately represent the cladistic relationships between these species based on their derived characteristics? Why or why not?

Answers

Answer:

The cladogram is correct.  The further explanation is given below.

Explanation:

As with most other species excluding lamprey, paired arms and legs are established. In any organism except lamprey as well as tuna, paired legs become available. Throughout all animals, except lampreys, tuna, certain bullfrogs, the amniotic membrane seems to be preserved. In kangaroos, rhesus monkeys including people, mammary glands were only ever available. The placenta has only been found throughout rhesus monkeys and also in humans. Foramen magnum forward will be exclusively found in humans.

How many times does cytokinesis occur in Meiosis?

Answers

Answer:

Two Times

Explanation:

In meiosis, cytokinesis must occur twice: once after telophase I and again, after telophase II.

If a cell does not go through the Sphase of the cell cycle before mitosis, what might be wrong with the daughter cells?

Answers

Answer:

Synthesis is the phase of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase. Since accurate duplication of the genome is critical to successful cell division, the processes that occur during S-phase are tightly regulated and widely conserved.

Explanation:

If a cell has not properly copied its chromosomes or there is damage to the DNA, the CDK will not activate the S phase cyclin and the cell will not progress to the G2 phase. The cell will remain in S phase until the chromosomes are properly copied, or the cell will undergo programmed cell death.

Each step in the cell division is controlled and regulated by proteins like Cyclins. If a cell does not go through the S phase, it can not go to the G2 phase until the replication process is completed, or until it's programmed cell death.  

-----------------------------------------------

As the cell passes through different steps of cell division, there are auto control mechanisms to ensure that the step was correctly performed and the cell is ready to go to the next step.  

Many regulator molecules act during the different stages of the mitosis process to make it possible.

There are too many factors interacting, activating, and deactivating to pass from one stage to another.

Cyclins are proteins that regulate the whole cell cycle. There are different types of cycling, each of them acting on a different stage.

When the cell is going through one of the stages, the only cyclin in high levels is the one that is regulating that cycle.

Once that stage is over, that cyclin concentration decreases, and the following one increases.

But if any step was not correctly performed, the cell can not pass to the following one.

During the S stage of the interphase occurs the DNI replication process.

At this point, also occurs the synthesis of histones and other associated proteins.

This is the only stage where the DNI molecule is replicated.

S phase cyclins are in charge of regulating the stage of DNA replication.

If the cell does not go through the S phase, the cyclins of this stage are not activated. And if S phase cyclins are not active, the cell can not go to the G2 phase.  

The cell remains in the S phase until the DNA replication process is correctly done. And if it does not occur, the cell suffer programmed cell death.

-----------------------------------------------

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What caused Antarctica’s climate to change from a more temperate climate to its current climate?
A)
isolation from the other continents
B)
El Niño
C)
being surrounded by ocean
D)
volcanic eruptions
E)
all of the above

Answers

Answer:

E

Explanation:

Answer:

E) All of the above

Explanation:

Got it right on the test

DNA replication results in two DNA molecules,

Answers

DNA replication results in two DNA molecules,
each with one new strand and one original strands.

Hope this helps!

The endocrine glands
a. transmit information from the sensory organs to the brain.
b. secrete hormones directly into the bloodstream.
c. are instrumental in producing myelin, which protects the neurons.
d. secrete neurotransmitters into the brain.

Answers

Answer:

B.secrete hormones directly into the bloodstream

Which is larger change in temperature, 1°C or 1°F?

Answers

Answer:

1°C

Explanation:

1 °C =  33.8 °F

Answer:

1°C

Explanation:


I need help with this this i don’t get this

Answers

Answer:

D because the others have nothing else deals with an empty garden that has an effect on things

Explanation:

The model represents the change in the DNA content of a cell during the cell cycle. DNA Content During the Cell Cycle 22 1 Complete Sets of DNA in Nucleus 1 Ceciclease​

Answers

Answer:

Explanation:

To late?

CAN SOMEONE HELP ME WITH THE PICTURE ABOVE
thank you

Answers

Answer:

B.

Explanation:

2% better off

The two main zones within the A climate are

Answers

Answer:

The Earth has three main climate zones: tropical, temperate, and polar. The climate region near the equator with warm air masses is known as tropical. In the tropical zone, the average temperature in the coldest month is 18 °C.

The climate has three main zones such as tropical, temperate, and polar.

What are Earth's climatic zone?

A climate zone refers to a condition by observing different factors like temperature, humidity, precipitation, season and natural vegetation of an area.

Earth's climate zones is surrounded by the horizontal belts of different climates such as tropical, dry, temperate, continental, and polar zones.

Firstly, Tropical climate zones which present near the Equator of earth and have high temperatures and high precipitation, while Dry or arid climate zones shows high temperatures  and little annual precipitation.

Similarly temperate climate zone observed  Earth’s middle latitudes and shows wider temperature and seasonal variations are more distinct.

Continental climate zone observed in mid-latitudes, shows swing of  temperatures  from cold in winter to warmer, where as polar climate zones shows harsh climate which cannot to support vegetation.

Hence, major zones are tropical, temperate, and polar.

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When you stop growing, your cells stop dividing.
True
False
Help please

Answers

Answer:

Absolutely not mitosis and meiosis don't stop until your heart stops beating.

It is false that When you stop growing, your cells stop dividing.

When you stop growing, it does not mean that all your cells stop dividing. In fact, cells in the human body continue to divide and replenish throughout life, albeit at different rates depending on the type of cell.

The human body is composed of various cell types that have different lifespans and rates of cell division. For example, cells in the skin, gastrointestinal lining, and blood undergo continuous division and turnover to replace old or damaged cells. These tissues are constantly renewing themselves.

However, some cells, such as neurons in the brain and muscle cells, have limited or no capacity for cell division after a certain stage of development. These cells primarily grow in size rather than dividing to create new cells. Therefore, not all cells in the body continue to divide once growth stops.

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Fill in the blank with the appropriate directional term to complete the following sentences as if a body is in anatomical position. More than one answer may be correct. Use terms from the previous slide.

The heart is to the lungs.
The knee is to the hip
The wrist is to the hand
The mouth is to the nose.
The thorax is to the abdomen
The thumb is to the ring finger
The sternum is to the heart
The skull is to the scalp
The ears are to the nose
Dorsal refers to the of the human body, while ventral refers to the of the human body

WORDS:
.
Deep Front Anterior Proximal Superficial Posterior Inferior Superior Distal Back Medial

Answers

Explanation:

Dorsal is posterior(back). Ventral is anterior(Front)

What is a scientific theory? Make up your own scientific theory.

Answers

Answer:

A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not guesses, but reliable accounts of the real world.

Explanation:

I hope this helps :)

Which of the following is not a process that occurs during cytokinesis of an animal cell?

(Please help I will mark brainliest)

A. Cytoplasm is divided

B. Nucleus reappears

C. Chromosomes line up at the metaphase plate

D. Nuclear envelope surrounds chromosomes

Answers

Chromosomes line up at the metaphase plate is the process that is not happen during cytokinesis.

What is cytokinesis?

Cytokinesis is the process of cell division in which the cytoplasm of a parental cell divides into two daughter cells. It occurs in both mitosis and meiosis type of cell division so we can conclude that Chromosomes line up at the metaphase plate is the process that is not happen during cytokinesis.

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Chromosomes lining up at the metaphase plate is not a process that occurs during the cytokinesis of an animal cell (Option  C). It is part of mitosis.

What is cytokinesis?

Cytokinesis is the cellular process by which the cellular cytoplasm separates to form two different daughter cells.

Chromosomes line up at the metaphase plate during the process of cell division (metaphase step of mitosis).

Mitosis can be sequentially divided into prophase, metaphase, anaphase, and telophase.

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What is a fourth order consumer

Answers

The fourth order consumer is called the ''quaternary'' consumer. It is an animal that eats a third order consumer. So if a duck was a third order consumer, and a snake was a fourth, then the snake would consume the duck.

What is chemosynthesis?
• How do chemosynthetic organisms get energy? Some examples of organisms include colorless sulfur bacteria, iron bacteria, and giant tube worms (Riftia parchyptila).

Answers

Answer:

By making reactions between elements or compounds.

Explanation:

Sulfur bacteria use sulfur as their main source of energy. We can say that they eat sulfur as you eat a burger or a fruit salad. This is the samething for iron bacteria.

What metal can be shaped using just your hands

Answers

Answer:

gallium

Explanation:

There's a metal that's so soft that it can melt at just under 30°C (85.6°F). This is known as gallium, and after playing around with it in your hands for just a couple of seconds, it will quickly liquefy.Se

What performs more functions human cells or bacterial cells and why

Answers

Human cells are eukaryotic which means they are more complicated, bacteria cells are prokaryotic which means they are simpler and viruses are not even cells at all, they are just genetic material in a protein shell. Not all bacteria make us sick, most actually help us have emunity to the virus. Hope this helps

Answer:

It is human cells

Explanation:

in one to three sentences describe what happens during the regeneration stage of the calvin cycle

Answers

Answer:

In stage 1, the enzyme RuBisCO incorporates carbon dioxide into an organic molecule, 3-PGA. In stage 2, the organic molecule is reduced using electrons supplied by NADPH. In stage 3, RuBP, the molecule that starts the cycle, is regenerated so that the cycle can continue.

Explanation:

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