Open Sci Ed Microwave

What is it called when molecules turn from a liquid into a gas?

• condensation

• evaporation

• melting

• sublimation

Tags

NGSS.MS-PS1-4

What is the primary function of a microwave oven?

• To heat food using electromagnetic radiation

• To cook food using infrared radiation

• To freeze food using cryogenic technology

• To bake food using convection currents

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which type of electromagnetic wave is used in microwave ovens?

• Radio waves

• Microwaves

• Infrared waves

• Ultraviolet waves

Tags

NGSS.MS-PS4-2

What is the typical frequency range of microwaves used in household microwave ovens?

• 300 MHz to 3 GHz

• 2.45 GHz

• 5 GHz to 10 GHz

• 30 GHz to 300 GHz

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

How do microwaves heat food?

• By causing water molecules to vibrate

• By ionizing the food particles

• By creating a magnetic field

• By emitting visible light

Tags

NGSS.MS-PS1-4

What safety feature prevents microwave ovens from operating when the door is open?

• A thermal fuse

• A door interlock switch

• A pressure sensor

• A light sensor

Which component of a microwave oven generates the microwaves?

• The magnetron

• The transformer

• The capacitor

• The diode

What is the role of the turntable in a microwave oven?

• To evenly distribute heat

• To increase cooking speed

• To reduce energy consumption

• To prevent food from burning

Why is it not safe to put metal objects in a microwave oven?

• They can cause sparks and fires

• They absorb microwaves and overheat

• They block microwaves from reaching the food

• They reflect microwaves and cause uneven cooking

What is the effect of microwaving food in a sealed container?

• It can cause the container to explode

• It preserves the food's nutrients

• It cooks the food more evenly

• It reduces cooking time

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4