Description of comets

Cosmic snowballs of gas and dust

Significance of discovering amino acids in comet dust

Amino acids are building blocks of life, suggesting comets may have contributed to the origins of life on Earth.

Main characteristics of a comet

A small celestial body composed of ice, dust, and rocky material, with a nucleus, coma, and often a visible tail.

Potential hazards of asteroid and comet impacts on Earth

Massive destruction, climate changes, and extinction events due to the impact's force and debris.

Scientists use telescopes and radar to track and predict the orbits of asteroids and comets, calculating their trajectories and potential impact risks.

How do scientists track and predict the orbits of asteroids and comets?

Asteroids and comets provide clues about the early solar system's composition and conditions, helping scientists understand its formation and evolution.

What role do asteroids and comets play in understanding the early solar system?

The image of a comet's tail indicates it is made of ice and dust.

What does the image of a comet's tail indicate about its composition?

The image of an asteroid shows it has a surface similar to Earth's Moon.

The image of an asteroid shows it has a surface similar to which celestial body?

The image of a meteor shower represents asteroids colliding in space.

What does the image of a meteor shower represent?

The NASA mission involving a robotic spacecraft collecting samples from an asteroid.

The composition of a comet's nucleus.

The primary goal of NASA's planetary defense program

To detect and mitigate potential asteroid and comet impact threats to Earth.

How scientists use robotic spacecraft to study asteroids and comets

By capturing images, collecting samples, and analyzing their composition and structure.

Differences between a meteor, a meteoroid, and a meteorite

A meteor is a streak of light caused by a meteoroid entering Earth's atmosphere. A meteoroid is a small rock or particle in space. A meteorite is a meteoroid that reaches Earth's surface.

How a comet develops a tail

As it approaches the Sun, a comet's ice vaporizes, releasing gas and dust, which are pushed away by solar radiation and wind.

Potential benefits of mining asteroids for resources

Mining asteroids could provide valuable metals and materials for space exploration and industry, reducing the need to transport resources from Earth.

Asteroids and Comets Flashcards

Student preview

31 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Asteroids primarily made of

Back

Rock and metal

2.

FLASHCARD QUESTION

Front

Mission that returned comet dust to Earth

Back

Stardust

3.

FLASHCARD QUESTION

Front

Main difference between asteroids and comets

Back

Comets have tails, asteroids do not

4.

FLASHCARD QUESTION

Front

Process when dust particles collide and form larger rocks

Back

Accretion

5.

FLASHCARD QUESTION

Front

Potential use for asteroids in the future

Back

Refueling stations

6.

FLASHCARD QUESTION

Front

Amino acid discovered in comet dust by NASA's Stardust mission

Back

Glycine

7.

FLASHCARD QUESTION

Front

Remnants from the formation of our solar system

Back

Asteroids, comets, and meteors

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