Upcoming Nova Events and Observations

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Questions and Answers

What type of celestial event does NASA predict will occur between now and September?

Nova Outburst (correct)
Meteor Shower
Solar Flare
Supernova

Why is the upcoming nova outburst considered a rare celestial event?

Nova outbursts are usually only visible from specific locations on Earth.
Nova outbursts are incredibly rare and happen only once every few centuries. (correct)
Nova outbursts are difficult to predict and often occur unexpectedly.
Nova outbursts are typically obscured by dust and gas, making them difficult to observe.

From where can the nova outburst be observed?

Only through telescopes with specialized filters.
From anywhere on Earth, using any standard equipment.
Only from specific locations on Earth with clear skies.
From anywhere on Earth, without any special equipment. (correct)

What is the main difference between a nova outburst and a solar eclipse?

A solar eclipse is a temporary event, while a nova outburst can last for several days or even weeks. (D) Signup and view all the answers

What is the purpose of the artist's concept of a nova explosion included in the text?

To provide a visual representation of the phenomenon described in the article. (C) Signup and view all the answers

Based on Schaefer's prediction, which of the following is the MOST likely scenario for the nova explosion?

The nova outburst will occur within the next few months. (B) Signup and view all the answers

According to the information provided, how long is the nova outburst expected to be visible through binoculars?

Just over a week. (B) Signup and view all the answers

What is the difference between a nova outburst and an eclipse?

Eclipses are visible for a shorter duration. (C) Signup and view all the answers

Assuming the nova outburst occurs in the next few months, why would it NOT be visible through binoculars during the month of December 2024?

The nova outburst will have faded away by then. (D) Signup and view all the answers

Based on the information provided, which TWO statements are TRUE related to NASA's expectations of this nova explosion?

The exact date is unknown. (B), The outburst is expected sometime between now and September 2024. (D) Signup and view all the answers

Based on the provided information, what is the approximate timeframe for the next nova outburst of T CrB?

2066 (C) Signup and view all the answers

Which of the following statements accurately reflects the phenomenon behind T CrB's periodic nova outbursts?

The white dwarf in T CrB system accumulates matter from the red giant, leading to a runaway thermonuclear reaction that causes an explosion. (A) Signup and view all the answers

The statement "... you get higher and higher pressure until bang — it's a runaway reaction" describes which specific event in T CrB's nova outburst?

The sudden release of energy and matter from the white dwarf's surface due to the runaway thermonuclear reaction. (A) Signup and view all the answers

What is the primary reason T CrB's white dwarf survives each nova event?

The explosion only affects the outermost layers of the white dwarf, leaving the core intact. (A) Signup and view all the answers

Which of the following best describes the role of the red giant in the T CrB star system?

The red giant is the primary source of material that feeds the white dwarf's nova outbursts. (A) Signup and view all the answers

What is the significance of the Earth Day Network (EDN) having over 50,000 partners in more than 190 countries?

It demonstrates the widespread global concern regarding environmental issues and the need for collective action. (B) Signup and view all the answers

Which of the following is NOT an example of landmark environmental legislation resulting from the Earth Day movement?

The Montreal Protocol (D) Signup and view all the answers

What is the primary purpose of the cartoon drawing in the context of Earth Day 2024?

To symbolize the devastating impact of plastic pollution on the environment. (B) Signup and view all the answers

Based on the text, which of the following statements accurately describes the Earth Day movement's impact?

The Earth Day movement has significantly influenced environmental policy both domestically and internationally. (C) Signup and view all the answers

What is the most appropriate interpretation of the statement 'Earth Day, celebrated annually on April 22, is a reminder of the urgent need to protect our planet.'?

Earth Day serves as a constant reminder of the ongoing need to prioritize environmental conservation. (B) Signup and view all the answers

What kind of star is involved in a nova?

A white dwarf (B) Signup and view all the answers

What happens to the material shed by the red giant in a nova system?

It accumulates on the surface of the white dwarf (C) Signup and view all the answers

What causes the nova explosion?

The ignition of the accumulated material on the white dwarf's surface (A) Signup and view all the answers

Why is the upcoming T Coronae Borealis nova eruption visible to the naked eye?

It is significantly brighter than other nova eruptions (B) Signup and view all the answers

What is the primary distinction between a nova and a supernova?

A nova involves the fusion of material on the surface of a star, while a supernova involves the collapse of a star's core. (C) Signup and view all the answers

What percentage of plastic produced annually is used for single-use purposes?

50% (A) Signup and view all the answers

Which of the following is NOT one of the four points in EDN's plan to reduce plastic production?

Support fossil fuel industries (A) Signup and view all the answers

What is a major health risk associated with plastic pollution mentioned in the content?

Cancer (B) Signup and view all the answers

What is the target year for phasing out all single-use plastics according to EDN's plan?

2030 (A) Signup and view all the answers

Which of the following statements best captures the sentiment expressed by Kathleen Rogers regarding plastics?

Our dependence on plastics is a significant health gamble. (C) Signup and view all the answers

Flashcards

Nova

A nova is a sudden brightening of a star, usually caused by a thermonuclear explosion on its surface.

Celestial event

A phenomenon that occurs in the sky, such as a nova, eclipse, or meteor shower.

Thermonuclear explosion

A rapid release of energy from nuclear reactions, often occurring in stars under certain conditions.