Dumpling Dilemma: Oil or Water?

What is the main reason for the difference in texture between dumplings boiled in water and those fried in oil?

• The type of meat used

• The type of wrapper used

• The way energy is transferred to water and oil

• The amount of salt added

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which substance requires the most energy to heat from 20°C to 100°C?

• Water

• Vegetable oil

• Air

• Sand

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How much energy is required to heat 1kg of vegetable oil from 20°C to 100°C?

• 335 kJ

• 134 kJ

• 80 kJ

• 66 kJ

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why does it take a long time to make a pot of water boil?

• Water has a high boiling point

• Water needs a lot of energy to increase its temperature

• Water evaporates quickly

• Water is a poor conductor of heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to the oil when the same amount of energy is transferred to both oil and water?

• The oil gets hotter faster than the water

• The oil and water reach the same temperature

• The water gets hotter faster than the oil

• The oil evaporates

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the maximum temperature that liquid water can reach before it turns into a gas?

• 100 degrees Celsius

• 150 degrees Celsius

• 200 degrees Celsius

• 250 degrees Celsius

Tags

NGSS.MS-PS1-4

Why can oil cook dumplings at a higher temperature than water?

• Oil stays liquid at higher temperatures than water.

• Oil boils at a lower temperature than water.

• Oil evaporates faster than water.

• Oil is denser than water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to dumplings cooked in water compared to those cooked in oil?

• Dumplings cooked in water get crispy.

• Dumplings cooked in water stay soft.

• Dumplings cooked in water burn easily.

• Dumplings cooked in water become oily.

Why do you need to transfer a lot of energy into dumplings to make sure they are cooked all the way?

• To make them taste better.

• To ensure they are cooked evenly.

• To make them look more appealing.

• To reduce cooking time.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Imagine Mia and James are discussing how heat moves. Mia says, 'The movement of thermal energy from a region of _________________ temperature to a region of _____________________ temperature is called heat.' Can you help them fill in the blanks?

• higher, lower

• cooler, warmer

• lower, higher

• medium, medium

Tags

NGSS.MS-PS1-4