Unit 2.2 Review

What is specific heat?

• The amount of heat required to raise the temperature of a substance by one degree Celsius

• The amount of heat required to melt a substance

• The amount of heat required to boil a substance

• The amount of heat required to freeze a substance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Does water have a high specific heat or low? Why?

• High, because it can absorb a lot of heat without a significant change in temperature

• Low, because it heats up quickly

• High, because it heats up quickly

• Low, because it can absorb a lot of heat without a significant change in temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why is light important to the oceans?

• It provides energy for photosynthesis

• It heats the water

• It helps fish to see

• It creates waves

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What colors of light waves are absorbed first? What color(s) are absorbed last?

• Red is absorbed first; blue is absorbed last

• Blue is absorbed first; red is absorbed last

• Green is absorbed first; yellow is absorbed last

• Yellow is absorbed first; green is absorbed last

Tags

NGSS.MS-PS4-2

Why do we see water as blue when it is actually clear?

• Because water absorbs red light and reflects blue light

• Because water absorbs blue light and reflects red light

• Because water absorbs green light and reflects yellow light

• Because water absorbs yellow light and reflects green light

Tags

NGSS.MS-PS4-2

What is the range of the pH scale?

• 0 to 14

• 1 to 10

• 0 to 7

• 1 to 14

A liquid is ​ (a)   if pH is above 7, ​ (b)   if pH is below 7, and ​ (c)   if pH is right at 7.

• basic/alkaline
• acidic
• neutral

Give an example of something acidic:​ (a)   , alkaline: ​ (b)   and neutral: ​ (c)   .

• Lemon juice
• bleach
• pure water

You burn your feet on the sand at the beach but find the ocean water is still very cold

• adhesion

• cohesion

• capillary action

• specific heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4