A refrigerator cools its interior by performing a cycle that involves...

Using the Peltier effect for thermoelectric cooling

Vaporizing a refrigerant to absorb heat, then condensing it outside

Pumping cold air from an external freezing unit

Creating a vacuum to slow molecular motion and reduce heat

How does a microwave oven primarily heat food?

By causing water molecules to vibrate rapidly

Using infrared radiation to toast the surface

Creating small plasma arcs to cook the food

Conducting heat through the air inside

Change the polarization of light passing through it

Chemically change color when heated

Dispersion and internal reflection

A changing magnetic field to induce an electric current in the pan

Concentrated infrared radiation

High-frequency sound waves to vibrate the pan

Microwave energy focused on the cookware

Lowers the boiling point of water

Forces steam into the food more effectively

Reduces the specific heat of the food

Raises the boiling point of water

Its molecules have both a water-attracting and an oil-attracting end

It creates a chemical reaction that neutralizes dirt

It uses abrasive particles to scrub surfaces

It acts as a strong acid to dissolve grime

It travels faster than normal light

It is a form of invisible radiation

It is coherent and monochromatic

Shorter-wavelength (blue and violet) light

Longer-wavelength (red and orange) light

12 questionsSign in to saveupdated 3 days ago

Quizzes · Knowledge

Random

Preview · 12 questions

01A refrigerator cools its interior by performing a cycle that involves...
02How does a microwave oven primarily heat food?
03The 'LC' in LCD (Liquid Crystal Display) screens refers to a substance that can be manipulated by an electric field to do what?
04The formation of a rainbow is primarily caused by which phenomenon involving sunlight and water droplets?
05An induction cooktop heats a pan without getting hot itself. It does this by using...
06A pressure cooker cooks food faster than a regular pot because the increased pressure inside does what?
07Rust, the reddish-brown coating that forms on iron or steel, is chemically known as what?
08What gas, produced by yeast during fermentation, causes bread dough to rise?
09What is the primary chemical principle that allows soap to clean grease and dirt?
10What property of light produced by a laser makes it fundamentally different from the light from a regular bulb?
11The Global Positioning System (GPS) determines your location by receiving timed signals from multiple satellites and using a method called what?
12The sky appears blue on a clear day due to a phenomenon called Rayleigh scattering. This process scatters which type of light most effectively?