Science 8 End of Year

Choose which one is a physical property

• Acidity

• Solubility

• Combustibility

• Basicity

If you had two different substances that looked exactly the same, which properties would you use to tell them apart?

• Sound

• Size

• Color

• Density

What do atoms contain?

• elements, neutrons, and bonds
• protons, neutrons, and electrons
• protons, molecules, and elements
• electrons, protons, and bonds

Tags

NGSS.MS-PS1-1

The atomic number is equal to _.

• the number of protons and electrons
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons neutrons and electrons

Tags

NGSS.MS-PS1-1

How many neutrons does B (Boron) contain?

• 5
• 11
• 6
• 10.811

Tags

NGSS.MS-PS1-1

When wavelength increases, what happens to the frequency?

• it increases
• it decreases
• it stays the same

Tags

NGSS.HS-PS4-1

Which wave has a longer wavelength?

• wave C
• wave D

Tags

NGSS.MS-PS4-1

Which type of wave does sound travel in?

• Transverse
• Longitudinal

In longitudinal waves, the parts where the coils are spread apart are called what?

• rarefactions
• compressions
• mechanicals
• longitudes

Why does the straw appear to be bent?

• light is reflected

• light is absorbed

• light is turned

• light is refracted

Tags

NGSS.MS-PS4-2