The Universe and Semester Exam practice

Front

In a chemical reaction, the atoms in the _______ rearrange to form new ________.

Back

reactants, products

Front

What is the net force that accelerates a 0.3 kg volleyball at 800 m/s²?

Back

240 N

Front

Which galaxy contains the sun and its solar system?

Back

Milky Way

Front

What type of galaxy is the Small Magellanic Clouds?

Back

Irregular

Front

What type of galaxy is Andromeda?

Back

Spiral

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

What is the difference between a spiral galaxy and an elliptical galaxy?

Back

Spiral galaxies have arms that spiral outward, while elliptical galaxies are more rounded and lack distinct features.

Front

What is the role of gravity in the formation of galaxies?

Back

Gravity pulls matter together to form stars and galaxies, influencing their structure and evolution.

Front

What are the main components of a galaxy?

Back

Stars, gas, dust, and dark matter.

Front

What is the significance of the Milky Way galaxy?

Back

It is the galaxy that contains our solar system and is home to billions of stars.