Dr. Stone Ep 10-12

What does it mean to be near-sighted?

• Unable to see things clearly unless they are relatively close to the eyes.

• Able to see things clearly unless they are relatively close to the eyes.

• Unable to see things clearly unless they are relatively far from the eyes.

• Able to see things clearly unless they are relatively far from the eyes.

What does it mean to be far-sighted?

• Unable to see things clearly unless they are relatively close to the eyes.

• Able to see things clearly unless they are relatively close to the eyes.

• Unable to see things clearly unless they are relatively far from the eyes.

• Able to see things clearly unless they are relatively far from the eyes.

Glass is made mostly of ______ or ______ sand.

• silica

• quartz

• silicone

• quarts

How much calcium carbonate do you need to make glass?

• 10%

• 20%

• 30%

• 40%

How much cooked seaweed do you need to make glass?

• 10%

• 20%

• 30%

• 40%

To make glass you add ground quartz, calcium carbonate, and cooked seaweed the last step is to (a)   it together.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Quartz Crystal is a hard, crystalline mineral composed of what?

• silica

• silicone

• charcoal

• sand

Tags

NGSS.MS-PS1-1

When did glass blowing start?

• Between 27 BC and 14 AD

• Between 37 BC and 4 AD

• Between 57 BC and 41 AD

• Between 7 BC and 4 AD

What caused the silver to turn black?

• Hydrogen Sulfide

• Hydrogen Sulfur

• Hydrogen Softener

• Hydrogen Sulfade

Tags

NGSS.MS-PS1-2

Sulfuric Acid was discovered by an alchemist during the ___ century.

• 8th

• 9th

• 7th

• 10th