Which two characteristics are used to classify stars on the Hertzsprung-Russell diagram?

size and density
density and composition
composition and temperature
temperature and absolute brightness

Answers

Answer 1

Answer:

Temperature and absolute brightness

Explanation:

The X-Axis of the diagram is heat, and it actually goes down in heat.

The Y-Axis is for brightness, and it works like a regular axis, meaning as it goes up, the number or unit of some sort, in this case luminosity, goes up.

Answer 2

Two characteristics are used to classify stars on the Hertzsprung-Russell diagram are temperature and absolute brightness

What is the  Hertzsprung-Russell diagram?

The Hertzsprung-Russel diagram or HR diagram is a graphical tool using a scatter plot used by astronomers to classify stars according to their:

luminositycolor temperaturespectral type

Here, The HR diagram plots as either

the temperature of the stars versus  the luminosity  OR the color of stars versus absolute magnitude.

Therefore two characteristics used to classify stars on the Hertzsprung-Russell diagram are temperature and absolute brightness(Luminosity)

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Related Questions

How do consumers use the sun to get their energy?

Answers

The producers use photosynthesis to make glucose(their food). The consumers get their energy from eating producers. Consumers cannot use the sun directly for energy.

Which of the following describes a waste product that occurs only in anaerobic respiration?

Question 6 options:

Lactic Acid: this acid builds up in your muscles and can cause a burning sensation


Carbon Dioxide: this gets released when glucose is converted to ATP


ATP: this energy is only created during anaerobic respiration

Answers

Answer:

Lactic Acid: this acid builds up in your muscles and can cause a burning sensation

Explanation:

Secondary succession can happen after primary succession or independently of primary succession.
Please select the best answer from the choices provided
ОТ
OF

Answers

Answer:

it is true

Explanation:

i took the quiz

False. Secondary succession does not happen after primary succession or independently of primary succession.

What is secondary succession?

Secondary succession is the process of ecological succession that occurs after a disturbance has disrupted an existing ecosystem, but left some soil and seed sources intact. Unlike primary succession, which starts with bare rock or soil with no living organisms, secondary succession begins in areas where there was already an established community of plants and animals.

Examples of disturbances that can lead to secondary succession include forest fires, landslides, and farming practices that disturb the soil. The process of secondary succession involves the gradual recolonization of the area by plants and animals, with different species replacing one another as the ecosystem gradually returns to a stable state.

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What's wrong with this ecological pyramid?

Answers

Answer:

The sun has an arrow leading to the decomposer, the sun should be at the bottom of the pyramid

Explanation:

The sun is the ultimate source of energy that provides energy to the producers. The producers use the light energy to synthesize the chemical compound. The energy from the producers is transferred to the primary consumers and their energy is transferred to the next levels. The sun cannot be decomposed by decomposer so the arrow from the sun leading towards the decomposer is not right.

describe the role of humans in environmental stability and change

Answers

humans have reduced environmental stability drastically due to our contributions to climate change through carbon dioxide and other greenhouse gas emissions. we have changed the weather patterns, increased global temperatures and caused air and plastic pollution as well as many others. the environment has changed and put animals and plants at risk of extinction because of heating of the earth, loss of habitat, etc

Geology question, halp me plez

Answers

Answer:

D. The question is too broad

Explanation:

Logically this question can be observed and answered with our modern tech so that votes out a and b. And noticing it asks about quantity rather than human quality c would be out too. This leaves D. The question is broad, what alligators? define live? You answer should be D

What is the term for changes in the internal or external environment that cause a response?

A. stimuli
B. signals
C. messages
D. nerves

Will give brainlest for quick and correct answer

Answers

Answer:

A

Explanation:

It is a detectable change in the physical or chemical structure of an organism's internal or external environment. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.

Answer:

Stimuli

Explanation:

In physiology, a stimulus (plural stimuli or stimuluses) is a detectable change in the physical or chemical structure of an organism's internal or external environment. ... Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.

how the edges of the Pacific plate and the North American plate converge.

Answers

Answer:

Explanation:

the North American Plate meets the Pacific Plate in a convergent boundary, meaning the plates are coming together.  the Pacific Plate sinks under the North American Plate in a process called subduction

Anabolic steroids are used to build muscle mass quickly. Why are they called “anabolic?”

Answers

Answer:

Anabolic steroids are synthetic, or human-made, variations of the male sex hormone testosterone. The proper term for these compounds is anabolic-androgenic steroids. "Anabolic" refers to muscle building, and "androgenic" refers to increased male sex characteristics. Some common names for anabolic steroids are Gear, Juice, Roids, and Stackers.


All organic compounds contain the element

Answers

Answer:

your answer is carbon molecules

hope this helped you

please mark as the brainliest (ㆁωㆁ)

Answer:

carbon atoms

hope this helps babes:)

Which of the following instruments produces highly magnified images of a cell’s internal structure but cannot be used to examine living cells?

Answers

Answer:

Transmission electron Microscope

Explanation:

It produces thin slices of photography and extremely tiny things. The disadvantages are that its expensive, and you cannot test living things with it, its also massive

an example of how water moves from
the biotic part to the abiotic part of an
ecosystem.

Answers

• Moving from abiotic to biotic: absorption by root hairs of plants
• Moving from biotic to abiotic: transpiration. Water evaporates from the leaves of plants.

One of the important examples of how water moves from the biotic part to the abiotic part of the ecosystem includes transpiration of water from the surface of the leaves of plant.

What is Transpiration?

Transpiration is the loss of water in the form of vapors from the surface of leaves of plant. Transpiration of water takes place from the stomata of plant cells.

Stomata are the specialized cells present on the surface of leaves which are covered by the guard cells that regulates the opening and closing of stomata and hence the movement of water from the leaf surface.

In transpiration, water from plant, a biotic part of ecosystem is lost in the form of vapors to the atmosphere, i.e., an abiotic component of ecosystem. The rate of transpiration is regulated by factors such as sunlight, concentration of ions like sodium and potassium, presence of starch.

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Organisms do not adapt as a result of competition for resources.
Please select the best answer from the choices provided
OT
OF

Answers

False, they will adapt

Which statement describes the major role of lipids within a cell?
A. They cause DNA to replicate
B. They move RNA in the cytoplasm.
C. They catalyze chemical reactions in the cell cytoplasm.
D. They are the main structural components of membranes.

Answers

Answer:

I think d

Explanation:

Lipids perform three primary biological functions within the body: they serve as structural components of cell membranes, function as energy storehouses, and function as important signaling molecules. The three main types of lipids are triacylglycerols (also called triglycerides), phospholipids, and sterols.

The football player made 10 yard gain. How many inches is that?
Explain every step

Answers

Answer:

360 inches

Explanation:

there are 36 inches in a yard so do 36 times 10 and you get 360

Which is the smallest level of organization?? Please help I have a time limit

Answers

Answer:

Y

Explanation:

The cell is the smallest part of the body

Im guessing Y since it’s a cell which is very small

Review what you know about the Activation Energy Graph for enzyme reactivity:
summarize in 3 statements in the space to the right of the graph.
Pls answer ill give brainliest if its on top of your account tag

Answers

Energy is greater when a enzyme is not used when a enzyme is stimulated uses less energy for same task and gets to overall energy release faster

Which list below correctly shows the levels of organization in an organism from left to right? organs, tissues, systems, cells, organisms tissues, cells, systems, organs, organisms organisms, cells, tissues, organs, systems cells, tissues, organs, systems, organism​

Answers

Answer:

Cell-tissue-organ-organ system and finally an organism

Explanation:

The list that correctly shows the levels of organization in an organism is from left to right is  :

Cell --> Tissue ---> Organ ----> System -- > Organism

The cell is the basic unit of life, a group of similar cells performing similar functions make up a Tissue. While tissues perform more specialized functions when compared to cells.

Tissues make up an organ while a system like Digestive system , respiratory system, reproductive system are made up of a group of organs performing similar functions. The collection of all  systems make up an organism.

Hence we can conclude that the  list that correctly shows the levels of organization in an organism is from left to right is  Cell --> Tissue ---> Organ ----> System -- > Organism

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Which sequence of events is a logical order of a scientific investigation? experiment → hypothesis → analysis of data → conclusion hypothesis → experiment → conclusion → analysis of data analysis of data → conclusion → experiment → hypothesis hypothesis → experiment → analysis of data → conclusion

Answers

Answer: The answer would be Hypothesis, Experiment, Analysis of data, then lastly conclusion.

Answer:

It is the 2 one.

Explanation:

Some types of aquatic frogs bury themselves in the mud and spend the winter hibernating at the bottom of lakes and ponds. Which characteristic of life does this behavior represent?

Answers

Answer:

defence

Explanation:

they try to save their territorythey bury them in mud to camoufalge

Explain what happens at each of the following boundaries: ocean/ocean
convergent, bcean/continental convergent, continental/continental
convergent, divergent and transform plate boundaries.

Answers

Answer:

The particularly severe winter of 1777-1778 proved to be a great trial for the American army, and of the 11,000 soldiers stationed at Valley Forge, hundreds died from disease. However, the suffering troops were held together by loyalty to the Patriot cause and to General Washington, who stayed with his men.

Explanation:

Explanation:oceanic plates are formed at divergent boundaries mainly at mid ocean ridges. The material that is poured out are basaltic lave in nature. Basalt is denser and heavier than the granite that makes up continental plates.

Oceanic plates are much thinner than the continental plates. When an oceanic plate meets a continental plate at a convergent boundary the oceanic plate is forced under the continental plate and destroyed. The convergent boundaries between ocean and continental plates create subduction zones. The oceanic plate is pushed under the continental plate and melted. This melted material becomes magma that may reach the surface as volcanos, or solidify under the surface as granite.

Continental plates are much thicker that Oceanic plates. At the convergent boundaries the continental plates are pushed upward and gain thickness. The rocks and geological layers are much older on continental plates than in the oceanic plates. The Continental plates are much less dense than the Oceanic plates. The Granite and recycled material are much lighter than the heavy basalt layers of the ocean plates.

Which acid and base react in the formation of salt sodium chloride? (A. hydrochloric acid and sodium hydroxide (B. sodium carbonate and chlorine (C. sodium hydroxide and sodium chloride

Answers

Answer:

The answer is a

Question 3 (4 points)
(02.02 LC)
Match the term with the definition. (4 points)
Column A
Column B
1.
Evaporation
a. A phase change from a solid to a liquid
2.
Melting
b. A phase change from a liquid to a solid
3.
Sublimation
C. A phase change from a liquid to a gas
4.
Freezing
d. A phase change from a solid to a gas

Answers

Explanation:

Evaporation-A phase change from a liquid to a gas

Melting-A phase change from a solid to a liquid

Freezing-A phase change from a liquid to a solid

Sublimation-A phase change from a solid to a gas

Hope this helped, lots of love,

-Kiddoo <3

Although crystalline, colloid, glassy, amorphous, and plasma phases are thought to exist, the three basic phases of matter are solid, liquid, and gas (vapor). A phase change is defined as the transformation of a phase from one form to another. Thus, option 1. C, 2. A , 3. D, 4. B is correct.

What are different phases of matter?

Depending on the pressure and temperature circumstances, a given set of matter can change its state or phase, transitioning to different phases as these variables change to favor their existence.

The primary distinction between a substance's phase and state can be summed, For instance, a solid can convert to a liquid when the temperature rises.

A substance's phase describes its uniform chemical and physical qualities, whereas a substance's state describes its shape at a specific temperature and pressure.

Therefore, A phase change from a solid to a liquid represent melting.

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What is metabolism????

Answers

A chemical process that occurs when a living organism converts food to energy to run certain cellular processes. This is essential for an living organism in order to maintain life.

Answer:

Metabolism is a chemical processes that take place in an organism and are necessary for life.

Sorry this answer is so short, it is terribly late where I am. Have a great night, get a good rest, and I enjoy this answer. Bye!

6. Would you expect the lithosphere temperature to be higher or lower than 1000 degrees celsius?​

Answers

Answer:

The lithosphere is extremely hot. The temperature of the lithosphere can reach around 600 degrees Celsius.

Explanation:

The lithosphere is excessively hot and the temperature of the lithosphere would be around 600 degrees Celsius. Thus, it is lower than 1000 degree celsius.

What isl herbal medicine?

Herbal medicine is defined as the medicine which is acquired from the various parts of the plants such as flowers, roots, shoots, and leaves. Herbal medicine are costly in compare to normal medicine and because there production is limited and there will be no side effect of herbal medicine in compare to allopathic medicine.

The main difference between herbal medicine and allopathic medicine is that the allopathic medicine is formed from the active or particular part of the plant but in herbal medicine whole plant parts are utilised.

The lithosphere is excessively hot and the temperature of the lithosphere would be around 600 degrees Celsius. Thus, it is lower than 1000 degree celsius.

Therefore,The lithosphere is excessively hot and the temperature of the lithosphere would be around 600 degrees Celsius.Thus, it is lower than 1000 degree celsius.

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Which are the four steps of mitosis?

Answers

Explanation:

everything but interphase

Answer:

prophase, metaphase, anaphase, and telophase

Explanation:

These phases occur in strict sequential order and cytokines- the process of dividing the cell contents to make two new cells.

Hope this helps!

what is the pressure that builds up inside of plant cells due to osmosis and the strength of the cell wall called?

Answers

It’s called cytoplasm I think that’s it

QUESTION 1
You want to start a Word document. Which of the following is the BEST first step?

Answers

Search and Open the word app

5(x + 6) - 2x = 3(x + 10)

Answers

Answer:

5(x + 6) - 2x = 3(x + 10)

or 5x + 30 -2x = 3x + 30

0r 0=0

Explanation:

Answer:

x=0

Explanation:

5x+30-2x=3x+30

combine like terms subtract 3x from both sides and 30 from both sides

5x-2x-3x=30-30

-6x=0

divide both sides by -6

x=0

Which characteristics are representative of a prokaryotic cell ?

Answers

Answer:

Prokaryotic cells have different characteristic features. The characteristics of the prokaryotic cells are mentioned below. They lack a nuclear membrane. Mitochondria, Golgi bodies, chloroplast, and lysosomes are absent.

Explanation:

hope it helps :))

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