Nova - The Science of Cold

Last updated 22 days ago

8 questions

Nova - The Science of Cold

Last updated 22 days ago

8 questions

Watch this video and answer the questions below. 
https://drive.google.com/file/d/0B5_yzJ_yw5mtVW5tUTk5LWFvcWM/view?usp=sharing&resourcekey=0-KNTHzypEEi4INLJcnu3IQg

Question 1

Which is true about the density of warm and cold air?

Cold air is denser than warm air

warm air is denser than cold air

Warm and cold air have the same density

Question 2

When Robert Boyle left the barrel of water out in the cold overnight, what did he discover?

Water froze at 0 degrees celcius

The structure of the barrel was optimal for freezing water

The barell weighed the same when the water was solid or liquid

Question 3

Other than temperature, what other factor was vitally important in calculating and attempting to reach absolute zero?

Pressure

Humidity

Atomic mass

Altitude

Question 4

Lavoiser (The French scientist) theorized that a substance called "Caloric" was responsible for matter getting colder. We know today that it is not caloric, but rather...

Pressure

Altitude

Slower movement of particles

Atomic mass

Question 5

When Faraday did his experiment with chlorine in a glass tube, he found that the tube absorbed heat. When this heat was absorbed it ___________ the surroundings.

Cooled

Heated

had no effect on

Question 6

Carnot discovered that heat ALWAYS flowed ____________

From cold to hot

From Higher to lower

From hot to cold

From lower to higher

Question 7

What is critical about freezing food to keep it tasting good?

Freezing the food slowly

Freezing the food fast

Keeping the pressure low

Keeping the pressure high

Question 8

What did air conditioning make possible in large cities?

Buildings taller than 20 stories

Trains that could run for longer than 4 hours a day

Ice cream shops that could be open year round

Watch this video and answer the questions below. 
https://drive.google.com/file/d/0B5_yzJ_yw5mtVW5tUTk5LWFvcWM/view?usp=sharing&resourcekey=0-KNTHzypEEi4INLJcnu3IQg

Question 1

Which is true about the density of warm and cold air?

Cold air is denser than warm air

warm air is denser than cold air

Warm and cold air have the same density

Question 2

When Robert Boyle left the barrel of water out in the cold overnight, what did he discover?

Water froze at 0 degrees celcius

The structure of the barrel was optimal for freezing water

The barell weighed the same when the water was solid or liquid

Question 3

Other than temperature, what other factor was vitally important in calculating and attempting to reach absolute zero?

Pressure

Humidity

Atomic mass

Altitude

Question 4

Lavoiser (The French scientist) theorized that a substance called "Caloric" was responsible for matter getting colder. We know today that it is not caloric, but rather...

Pressure

Altitude

Slower movement of particles

Atomic mass

Question 5

When Faraday did his experiment with chlorine in a glass tube, he found that the tube absorbed heat. When this heat was absorbed it ___________ the surroundings.

Cooled

Heated

had no effect on

Question 6

Carnot discovered that heat ALWAYS flowed ____________

From cold to hot

From Higher to lower

From hot to cold

From lower to higher

Question 7

What is critical about freezing food to keep it tasting good?

Freezing the food slowly

Freezing the food fast

Keeping the pressure low

Keeping the pressure high

Question 8

What did air conditioning make possible in large cities?

Buildings taller than 20 stories

Trains that could run for longer than 4 hours a day

Ice cream shops that could be open year round