8th Grade Physical Science BIG Test Review Thomas

Select the correct order of waves on the EMS 

• Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
• Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
• Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
• Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma

Tags

NGSS.HS-PS4-3

The blue section of the wave is measuring _________________.

• wavelength
• crest
• trough
• amplitude 

Tags

NGSS.MS-PS4-1

Which wave in the diagram has the greatest wavelength?

• 1
• 2
• 3
• 4

Which of the following objects is not an electrical conductor?

• Paper clip

• Coin

• Eraser

• Iron nail

Select specific properties that are observed by your senses

• Smell

• Density

• Texture

• Color

• Thermal conductivity

A glass marble and a piece of cork of the same shape and size are dropped in water. Which of the following explains correctly why the glass marble sinks while the cork piece floats on water?

• The glass marble is denser than water while the cork is less dense than water.

• The glass marble is less dense than water while the cork is denser than water.

• The glass marble and the cork are both denser than water.

• The glass marble and the cork are both less dense than water.

The same quantity of sugar and sand are added to a glass of water and stirred. After some time the sugar particles cannot be seen while sand particles settle down. Based on the observations, which of the following statements is TRUE?

• Sugar is soluble in water while sand is not.

• Sand is soluble in water while sugar is not.

• Both sugar and sand are soluble in water.

• Both sugar and sand are not soluble in water.

Helium balloons rise on earth because

• helium is less dense than air
• helium is more dense than air
• helium is cooler than air
• helium is warmer than air

In this image, the VOLUME of A is _____ the volume of B

• equal to

• greater than

• less than

What happens to the density of the balloon if volume is doubled?

• The density is cut in half.

• The density stays the same.

• The density doubles.

• Not enough information to tell.