Exploring Planets and Galaxies

Which of the following is a characteristic of inner planets?

• They have thick atmospheres composed mainly of hydrogen and helium.

• They have rocky surfaces and are smaller in size.

• They have rings made of ice and rock particles.

• They are located beyond the asteroid belt.

What is a common feature of the atmospheres of outer planets?

• They are composed mainly of carbon dioxide.

• They have thin atmospheres with little to no clouds.

• They are thick and composed mainly of hydrogen and helium.

• They have no atmosphere at all.

Match the following types of galaxies with their characteristics.

• Characterized by an ellipsoidal shape with a smooth, nearly featureless brightness profile.

• Irregular Galaxy

• Characterized by an irregular shape without a distinct form.

• Spiral Galaxy

• Characterized by a flat, rotating disk containing stars, gas, and dust, and a central concentration of stars known as the bulge.

• Elliptical Galaxy

During which stage of a star's life cycle does it expand and cool after using up its hydrogen fuel?

• Main Sequence

• Red Giant

• White Dwarf

• Supernova

Which inner planet is known for having the hottest surface temperature due to its thick atmosphere of carbon dioxide?

• Mercury

• Venus

• Earth

• Mars

Which type of galaxy lacks a distinct shape and structure?

• Spiral Galaxy

• Elliptical Galaxy

• Irregular Galaxy

• Barred Spiral Galaxy

The final stage in the life cycle of a massive star is (a)  

• Red Giant
• White Dwarf
• Neutron Star or Black Hole
• Main Sequence

Tags

NGSS.HS-ESS1-3

Which inner planet has the most similar size and composition to Earth?

• Mercury

• Venus

• Mars

• Jupiter

Match the following outer planets with their notable features.

• Known for its prominent ring system

• Saturn

• Known for its deep blue color

• Jupiter

• Largest planet in the solar system

• Uranus

• Has a tilted rotation axis

• Neptune

Match the following types of galaxies with their descriptions.

• A galaxy characterized by a flat, rotating disk containing stars, gas, and dust, and a central concentration of stars known as the bulge.

• Irregular Galaxy

• A galaxy with an ellipsoidal shape and a smooth, nearly featureless brightness profile.

• Elliptical Galaxy

• A galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy.

• Spiral Galaxy