The Universe and Semester Exam practice

Front

What type of galaxy is Andromeda?

Back

Spiral

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

Define a spiral galaxy.

Back

A galaxy characterized by a flat, rotating disk containing stars, gas, and dust, with spiral arms extending outward.

Front

What is a chemical reaction?

Back

A process where reactants are transformed into products through the rearrangement of atoms.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = m × a)

Front

What are the main components of a galaxy?

Back

Stars, gas, dust, and dark matter.

Front

What is the difference between reactants and products?

Back

Reactants are substances that undergo a chemical change, while products are the new substances formed.