Semester 1 Review

Front

Which star is the hottest?

Back

Blue Star

Front

What best describes stars in area C?

Back

Dim and Hotter

Front

If all three are waves of light, which wave has the largest speed?

Back

None (same speed)

Front

What are two or more atoms that are different and chemically bonded together called?

Back

Compound

Front

What is the description for ultraviolet rays?

Back

Causes skin to tan.

Front

What is a star?

Back

A massive, luminous sphere of plasma held together by gravity.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more different elements are chemically bonded, while a mixture is a combination of two or more substances that are not chemically bonded.

Front

What is the electromagnetic spectrum?

Back

The range of all types of electromagnetic radiation, including visible light, radio waves, and gamma rays.

Front

What is the speed of light?

Back

Approximately 299,792 kilometers per second (or about 186,282 miles per second).

Front

What are the characteristics of a blue star?

Back

Blue stars are very hot, have high luminosity, and are typically much larger than the sun.