7.2

Process that forms new ocean crust and moves it

• magnetic reversal

• mid-ocean ridge

• normal polarity

• reversed polarity

• seafloor spreading

Magnets point north when Earth's magnetic field has this?

• magnetic reversal

• mid-ocean ridge

• normal polarity

• reversed polarity

• seafloor spreading

Tags

NGSS.HS-PS2-5

Takes place when Earth's magnetic field changes

• magnetic reversal

• mid-ocean ridge

• normal polarity

• reversed polarity

• seafloor spreading

What is the pH level of a neutral solution?

• 7.0

• 7.2

• 7.4

• 7.6

Which of the following pH levels indicates a basic solution?

• 6.8

• 7.0

• 7.2

• 7.4

A solution with a pH of 7.2 is considered to be:

• Acidic

• Neutral

• Basic

• Highly Basic

What is the pH of pure water at 25°C?

• 6.8

• 7.0

• 7.2

• 7.4

Which pH value is closest to that of human blood?

• 6.8

• 7.0

• 7.2

• 7.4

Tags

NGSS.HS-LS1-3

If a solution has a pH of 7.2, what is its hydrogen ion concentration?

Which of the following pH values would indicate a slightly alkaline solution?

• 6.5

• 7.0

• 7.2

• 8.0