Explanation

Explanation

Explanation

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. 

Explanation

The earliest known audio tape recorder was a non-magnetic, non-electric version invented by Alexander Graham Bell's Volta Laboratory and patented in 1886.

Explanation

Mass media refers to a diverse array of media technologies that reach a large audience via mass communication. 

Explanation

Light rays from the sun appear to the naked eye as white light, but each ray contains a broad range of wavelengths

Explanation

Explanation

Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect. 

Explanation

Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below.

The stratosphere is very dry; air there contains little water vapor. 

Explanation

The geographic grid refers to the internationally-recognized system of latitude and longitude used to location positions on Earth's surface.