Hertzsprung-Russel Diagram: Hertzsprung-Russel Diagram also knows as HR diagram is a scatter plot of stars reflecting the relationship between luminosity and temperature or absolute magnitude vs color. Note- Larger the absolute magnitude of a star means smaller luminosity (or smaller energy it radiates). Table of various stars with color and temperature Stars Color Absolute Magnitude Adhara Bluish-white Blue 1.50 Spica Achemar -3.55 Blue -1.3 -0.52 Regulus Blue-White Sirius Blue-White Sun Yellow-White 4.8 Proxima Centauri Red 15.60 Deneb Blue-White -7 Rigel Canopus Betelgeuse Aldebaran Blue -7 Yellowish-White -5.53 Red -6 Orange -1 Mira Red 0.99 Procyon B Epsilon Eridani Bernard's Star White 11 Orange Red 6. 13 Capella Yellow-White -1 1. What is the meaning absolute magnitude of star? (Write down in few sentences)

Q: Describe one technological innovation that has been proven to reduce carbon dioxide emissions?

A: By analysing the question, We need to Describe one technological innovation that has been proven to ...

Q: Draw lithostratigraphic correlation lines between the rock units A, B, and C in Figure Use solid lin...

A: Lithostratigraphy is the study of rock layers or rock strata and correlating them. It is a sub-divis...

Q: What is the major anthropogenic source of sulfate aerosols?     Volcanoes     Coal burning s...

A: The combustion of any sulphur combining material producing sulphur dioxide. It will react with the a...

Q: What kinds of volcanic activity occurred in the American West during Neogene time?

A: Volcanic activity is a naturally occurring process.  When there is a sudden or continuing release of...

Q: You are defense attorney arguing in court for protecting a coral reef from harmful human activities....

A: Coral reefs are one of the significant underwater ecosystems that play a dominant role in the surrou...

Q: What evidence tells us that the CO2 increase in the atmosphere since the Industrial Revolution is pr...

A: The atmosphere is the mixture of gases that surrounds the Earth. The composition of the atmosphere v...

Q: Seawater is denser than freshwater. A ship moving from the Atlantic Ocean into the Great Lakes goes ...

A: The waters in which seawater meets the freshwater are usually termed brackish water. Brackish water ...

Q: What are the projected impacts of a doubling of CO2 in the atmosphere?     Temperature extremes ...

A: The doubling of the level of concentration of carbon dioxide in the atmosphere leads to further incr...

Q: If you were on the Moon and wanted to find a supply of water in some form, where would be the best p...

A: The Earth’s natural satellite is the moon. It revolves around the earth. The gravity on the moon is ...

Q: Why is ocean seeding bad?

A: Ocean Seeding is the introduction of iron for enhancing the primary production. It stimulates the bi...

Q: What is the key environmental impact of chlorofluorocarbons (CFCs)s?     CFCs combine with react...

A: The atmosphere is the mixture of gases that surrounds the Earth. The composition of the atmosphere v...

Q: How do oceanic and atmospheric circulations affect the distribution of energy on Earth? Polar easter...

A: The world ocean and atmospheric circulation play an essential factor in the storage and redistributi...

Q: How did climate play a role in human migrations between 70,000 and 50,000 years ago?"     Interv...

A: Climate is the long-term average of the weather over almost 30 years. The primary factors of climate...

Q: Which of the following is Not a test to help classify a mineral

A:  Earth’s crust was constructed due to continued eruption and layering of magma. Due to frequent volc...

Q: What is the difference between a drought and a desert?

A: Geomorphology is the study of the landforms, structures, features, how they have formed, the sedimen...

Q: Define I = PAT and explain why it is so important for understanding environmental science.

A: Human effects on our ecosystems are undeniably powerful – sometimes powerful enough to overwhelm the...

Q: What are similarities and differences between coral reefs to ocean life, humans, and the overall env...

A: A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of c...

Q: 1 he timeline below represents the entire geologic history of Earth. The lettered dots on the timeli...

A: Earth is the third planet in the solar system. It formed almost 4.5 billion years ago. It is the onl...

Q: 11

A: Hawaiin island is a archipelago  of eight major islands , atolls, smaller islets , seamounts in the ...

Q: What are the primary human components that add uncertainty to future climate projections? (Select al...

A: The greenhouse gases absorb solar energy which increases the earth's surface temperature. Therefore ...