On the Hubble distance ladder, which technique is useful for determining the distance to an object located beyond 15 million parsecs away.
a) Radar
b) Hubble’s Law
c) Measuring the period of variable stars and applying the Period-Luminosity relationship.
d) Parallax

Answers

Answer 1

Answer:

d) Parallax

Explanation:

Astronomers use Hubble to measure the distances of a class of pulsating stars called Cepheid Variables, employing a basic tool of geometry called parallax.  This is the same technique used by surveyors to measure distances on Earth.

Answer 2

On the Hubble distance ladder, the Parallax technique is useful for determining the distance to an object located beyond 15 million parsecs away. The correct option is D.

The parallax angle is the angle measured from a nearby star between the Earth at one time of year and the Earth six months later. Astronomers use this angle to calculate the distance between Earth and a star.

What is the parallax method used for?

The parallax method is only used to calculate the distances between nearby stars. Give an explanation. The parallactic angle becomes too small to measure accurately when measuring very distant stars using the parallax method.

Nearby stars appear to move mildly in relative position to more distant stars as the Earth orbits the Sun. The length of a nearby star can be calculated by determining the amount of this shift, known as the parallax angle, between two known points in the Earth's orbit.

Thus, the correct option is D.

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Related Questions

Nomadic societies negatively impact the environment more than industrial societies. true or false

Answers

Answer:

False Industrial societies used more reources and caused damage to the environment.

Explanation:

Nomadic societies negatively impact the environment more than industrial societies. This is an example of Nomadism. Hence, the above statement is appropriate.

What is the meaning of Nomadism?

Nomadism is a style of life for people who roam around seasonally or irregularly rather than living permanently in one area. It differs from migration, which is noncyclical and necessitates a complete change of habitat.

The majority of nomadism is located in remote locations with few populations, mainly in the arid as well as semi-arid regions of Asia and Africa.

A member of the community without a fixed residence who frequently travels to and from the same locations is referred to as a nomad. Hunter-gatherers, pastoral nomads, tinkers, and trading nomads are a few examples of these groups. Because they had to lead their livestock to new grazing grounds, pastoral or herding societies remained nomadic. Specialized professions started to emerge at the same time as pastoral societies started trading with regional tribes.

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Which sustainable agricultural practice involves tilling and planting on ridges that are across or perpendicular to a slope? A. conservation tillage B. contour farming C. irrigation scheduling D. furrowdiking

Answers

Answer:

Contour farming

Explanation:

I think it would be contour farming mostly because none of the others seem to be done on ridges or slopes.

a map can’t show both the correct ___ AND ____

Answers

a map cant show both the correct size AND shape

Internalizing external costs
-increases the chance for environmental degradation.
-involves making the market price approach the true cost of an economic goo
-omits the costs of taxes.
-fails to include the cost of pollution.
-is a simple change to make.

Answers

Answer:

increases the chance for environmental degradationfails to include the cost of pollution

Explanation:

The external cost is known as externalities and refers to uncompensated social or environmental effects. An example of it is the fuel station when you purchase the fuel for the car you pay for the product that is internal cost and not for the air pollution it creates.

The so-called Coast Ranges are Long, linear mountain ranges oriented northwest to southeast along the coast:________

Answers

Answer:

The Coast Ranges are referred to as the West Coast. That geographical space is now known as Carlifonia.

Califonia is a pacific state. It measures about 164 thousand square miles and is home to about forty million residents.

 

Cheers!

Explain one of the three types of plate movement that can take place along the Earth's plate boundaries. You may
discuss convergent, divergent, or transform boundaries. What happens at this type of boundary? What can happen to
Earth's surface?

Answers

Answer:

Hey!

I WILL BE TALKING ABOUT DIVERGENT BOUNDARIES FOR YOU!

Explanation:

What happens at this type of boundary?

So at a DIVERGENT BOUNDARY, the 2 tectonic plates move AWAY from each other..EARTHQUAKES occur and MAGMA (lava) RISES TO THE EARTHS SURFACE (either via a slow, volcanic eruption or directly)...

What can happen to the Earth's surface?

Well...over multiple eruptions, something called a SHIELD VOLCANO forms.     These are WIDE and FLAT in shape...some can be hundrends of kilometers wide but discrete in presence...

Sometimes there aren't any volcano formations and instead a RIDGE VALLEY is formed...an area of ground that appears to have "sunk" as the 2 paltes have moved away...

HOPE THIS HELPS!!

Describe how the growth of cities is similar or different from each other.

Answers

Essentially, some cities can grow in a "spreading out manner," until they eventually hit their respective municipal borders. However, once a city cannot grow laterally anymore, they grow upwards, this is expressed as the buildings we see in urbanized areas throughout the world.  

Sand that is carried by turbulent water currents that flow within the surf zone parallel to the shoreline are called

Answers

Longshore transportation

What City is Located at 32 S, 116 E​

Answers

Answer:

I guess it is Perth city

This led us to conceive of a future city in which Perth Central Station – lying on the axis of Perth's longitude and latitudinal location in the world, 32 south and 116 east.

Different nations have distinct definitions of what constitutes a city, although the term is frequently used in a generic sense to denote a location with a large population. Examples from everyday life: Major cities all around the world include New York City, Tokyo, Paris, London, Moscow, Beijing, Madrid, and Berlin.

Greater in size or importance than a town or hamlet, a city is a somewhat permanent and well-organized focus of people. Certain urban areas are awarded the designation "city" as a result of a legal or conventional distinction, which can differ between regions or countries.

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Analyze the image below and answer the question that follows. Satellite image of a brush fire near a coastline. Image courtesy of NASA Geographers studying the effects of climate change might look at the issue on a small __________ by studying how it affects the brush fires in Australia, shown in the image above. A. frequency B. elevation C. scale D. perspective Please select the best answer from the choices provided.

Answers

Answer:

______________

C. Scale

______________

Answer:

Hey!

I think the best possible answer is SCALE!

Explanation:

HOPE THIS HELPS!

“Using the map above,why number is on the state with the capital of concord

Answers

Answer:

Your answer would be Concord, Connecticut.

Explanation:

I'm a little rusty on states, so I can't help you with what number is on Connecticut, sorry. I believe it is either 2 or 5. :)

Answer:

Its 9

Explanation:

Used An Map

On the world map above, the highlighted line that travels from north to south is called the __________.

Answers

Answer:

The name of the highlighted line that travels from north to south is called the Prime Meridian

The prime meridian is the line drawn north to south at 0° (0 degrees) longitude. Sentences: The prime meridian divides Earth into the Eastern Hemisphere and the Western Hemisphere.

What is the answer? Please

Answers

Answer:

Ideals or beliefs

Explanation:

Its this one because values are the moral principles (ideals) we hold. To connect this to the real world, you would choose a partner that holds the same moral values as you, someone who agrees with you and your moral principles.

Answer:

i think its ideals or beliefs but dont quote me on this one

Explanation:

Study the map of projected population growth in Africa.
Which statement best describes the information
presented on the map?
The areas projected to have the least amount of
growth are in Central Africa.
The areas projected to have the greatest amount of
growth are in Northern Africa.
Most African countries are projected to have at least
60 percent growth.
Most southern African countries are projected to have
at least 100 percent growth.
Projected average
population growth 2010-50
> 100% 61-80%
141 | 41-60%
121-140% 21-40%
101 10-20%
| 81-100%

Answers

Answer:c

Explanation:

Answer:it’s c

Explanation:

It is what it is

Which of the following would a large scale map BEST represent?\

Answers

what are the following??

Answer:

wheres the map?

Explanation:

Depending on the context, the word ________ may refer to a tornado, a hurricane, or a large-scale atmospheric system in the midlatitudes.

Answers

Depend on the context, the word CYCLONE may refer to a tornado, a hurricane, or a large-scale atmospheric system in the midlatitudes

Which of the following countries was not part of the heavily industrialized Black Triangle of Eastern Europe? A. Poland B. the United Kingdom C. the Czech Republic D. East Germany

Answers

Answer:

B, the United Kingdom

Explanation: I just got an 100% on edg2020

Answer:

b

Explanation:

edge2020 :)

The two lines of longitude that are found opposite from one another will always add up to?

Answers

Answer: 360°

Explanation;

Lines of longitude are imaginary lines that used along with latitudes allow us to be able to locate points on Earth. Longitudes are drawn vertically on maps with the most popular one being the Prime( Greenwich) meridian.

As the Earth is spherical, the lines of longitude encircle the Earth which means that an entire longitudinal line will be 360°. As maps are flattened out, the longitudinal line is divided into 2 such that the longitudinal lines seen on a map are 180° each. When a line of longitude is added to its opposite, they will reform the original line that runs around the earth thereby making 360°.

The Earth has height, width and depth. This means that it exists in ________ dimensions.​

Answers

The height, depth and width within anybody signifies that the object on the particular element is three dimensional.

The age of the Earth is 4.54 billion years old. The circumference of the Earth is 40,074km. The diameter of a penny is 1.9cm. One penny represents one year of time. How many pennies would you need to represent the age of the Earth. Express your answer as a full number with units in "pennies", no spaces

Answers

Answer:

If a penny represents one years, 4.54 billion pennies are needed to represent the age of the Earth.

Explanation:

The equivalent number of pennies is the age of the Earth divided by the age of a penny. That is:

[tex]n = \frac{4.54\times 10^{9}\,years}{1\,\frac{year}{penny} }[/tex]

[tex]n = 4.54\times 10^{9}\,pennies[/tex]

If a penny represents one years, 4.54 billion pennies are needed to represent the age of the Earth.

Geologist are scientists who study what?

Answers

Hello,

I hope you and your family are staying safe and healthy!

A Geologist is scientist who studies volcanic activity. So they pretty much studies the solid, liquid, and gaseous matter that constitutes the Earth.

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4. France's crude death rate is probably higher than Bangladesh's because
(A) France is involved in more wars
(B) France has more natural disasters
(C) France has a higher percentage of elderly people
(D) Bangladesh has a better healthcare system
(E) Bangladesh has a higher life expectancy

Answers

Ok so the answer will be C

what is The best tool to use to compare the size of the continents

Answers

a Satellite Would be the best tool.

Jess scratches an unknown mineral with topaz, which has a Mohs hardness of 8. Topaz leaves a scratch on the unknown mineral. The unknown mineral _____.

Answers

The unknown mineral has to have a smaller hardness number (meaning it’s softer). It’s hardness can be between 1-7. Some minerals it could be (and their hardness) are:
quartz-7
orthoclase-6
apatite-5
fluorite-4
calcite-3
gypsum-2
talc-1


Two solids combine to form
liquid​

Answers

Answer:

yeast and sugar are two solids that combine to form a liquid

what are the answers to the three basic economic questios?

Answers

Answer:

what goods and services should be produced, how should they produce it, and who will consume them

Answer:

be more specific if you want someone to answer but judical, branchs like those?

Explanation:

How is the modern map of Europe different from the ancient map of Europe

Answers

War

Explanation:

Europe has evolved and changed due to war, borders have been moved, countries have been conqered and war has made what Europe looks like today with all of its present borders.

Answer:it's D the morden map shows the shapes

Explanation:

Explain how the nucleus Observed in cheek cell​

Answers

Answer:

The nucleus at the central part of the cheek cell contains DNA. When a drop of methylene blue is introduced, the nucleus is stained, which makes it stand out and be clearly seen under the microscope.

Hope this helps!

Explain why it is important to understand if a map direction is based on true north or magnetic north?

Answers

I think that its important because when we get lost we dont know the true north or magnetic north. So we need to know about it

Which regions of Earth have the most variation in weather based on its alignment with the sun?

Answers

Tides occur as a response to the gravitational attraction of the Sun and Moon and the rotation of Earth. There are three basic tidal patterns - diurnal, semidiurnal, and mixed. Diurnal tides are characterized by one high and low tide a day.
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