Georgia Physical Science

How do electromagnetic waves differ from mechanical waves?

• Mechanical waves have crests and troughs, but electromagnetic waves do not

• Mechanical waves need a medium through which to travel, but electromagnetic waves do not

• Electromagnetic waves come in many types, but mechanical waves are all the same

• Electromagnetic waves carry energy, while mechanical waves carry matter

Tags

NGSS.MS-PS4-2

S8P4b The chart above shows the range of wavelengths for different types of electromagnetic waves. Use the data in the chart to answer the question: Which of the waves transmits the least energy?

• gamma rays

• x-rays

• ultraviolet light

• visible light

What happens to a light wave that is absorbed by matter?

• It is reflected from the surface of the matter

• It is refracted

• It bends around the matter

• Its energy is turned into heat

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

In the diagram above, the solid arrow represents a light wave traveling through air. Which dashed arrow represents the path the light will travel after reaching the glass?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

Which is an example of a mixture?

• water

• hydrogen gas

• a blueberry muffin

• a spoon made of the element silver

Which of the following is an example of a pure substance?

• a sample of oxygen gas

• a solution of sugar water

• a mixture of pasta and sauce

• an alloy of iron and carbon

Ammonia can be represented by the chemical formula NH₃. Which of the following best describes ammonia?

• an atom

• a compound

• an element

• a mixture

Tags

NGSS.MS-PS1-1

An unknown substance is provided in a science class. It consists of particles that are different colors and different sizes. The particles are unevenly distributed throughout the substance. The substance is ___________.

• an element

• a compound

• a homogeneous mixture

• a heterogeneous mixture

S8P1a A diagram of a particle is shown above. The particle is most likely _________.

• an atom

• a molecule

• a homogeneous mixture

• a heterogeneous mixture

Tags

NGSS.MS-PS1-1

An atom of the element has how many protons?

• 18

• 19

• 39

• 58

Tags

NGSS.MS-PS1-1