Science 9 Space Unit Review

An Astronomical Unit is used in space because distances are so fast, how long is an astronomical unit and what does it represent?

• 150 Million km; distance from Earth to the sun
• 150 Million km; distance of our solar system
• 15 Million km; distance from Earth to the sun
• 15 Million km; distance of our solar system

What type and example of that planet could be described as generally warmer, have a solid rocky core and closer to the sun

• Terrestrial; Jupiter
• Terrestrial; Venus
• Jovian; Jupiter
• Jovian; Venus

This celestial body has long tails and often described as dirty snowballs

• Asteroids
• Planets
• Meteors
• Comets

This celestial body is believed to be leftover remnants of the solar system and are irregular shaped

• Asteroids
• Planets
• Meteors
• Comets

What do we consider Pluto?

• Planet
• Dwarf Planet
• Asteroid
• Star

Dark patches on the sun that represent areas that are slightly cooler than the rest of the surface.

• solar flares
• solar prominences
• sunspots
• Corona

Why is Earth considered in the "Goldilocks zone"

• Not too hot, not too cold, just right
• Has people on its surface
• Too hot to survive
• Porridge is available for use.

Eruptions of gas on the sun's surface that can last a few hours and create solar winds.

• solar flares
• solar prominences
• sunspots
• Corona

Large loops of super-hot gas that extend from the Sun's surface

• solar flares
• solar prominences
• sunspots
• Corona

Comparatively, what is the size and age of our sun?

• Average sized, approximately 5 billion years old
• Average sized, approximately 10 billion years old
• Large in size, approximately 5 billion years old
• Large in size, approximately 10 billion years old