Answer:
<em>1</em><em>)</em><em> </em><em>P</em><em>late</em><em> </em><em>tectonic</em><em> </em><em>theory</em>
<em>2</em><em>)</em><em> </em><em>Lithospheric</em>
<em>3</em><em>)</em><em> </em><em>Plates</em>
<em>4</em><em>)</em><em> </em><em>Heat</em>
<em>5</em><em>)</em><em> </em><em>Less</em><em> </em><em>dense</em>
<em>6</em><em>)</em><em> </em><em>Conventional current</em>
<em>7</em><em>)</em><em> </em><em>Magma</em>
<em>8</em><em>)</em><em> </em><em>Ocean</em><em> </em><em>crust</em>
<em>9</em><em>)</em><em> </em><em>Slowly</em>
<em>10</em><em>)</em><em> </em><em>Drifting</em><em> </em><em>away</em><em> </em>
Answer:
Explanation:
6 waves in 12 seconds
The period of a wave is defined as the time taken by the wave to complete one oscillations.
Here, 6 waves are completed in 12 seconds
So, one wave is completed in 2 seconds
So, the period of the wave is 2 second.
frequency is defined as the number of waves completed in one second. It is the reciprocal of period of the wave.
frequency = 1 / 2 = 0.5 Hertz
Let the wavelength is λ.
f = 660 kHz = 660000 Hz
the relation for the wave speed and the wavelength and the frequency is given by
v = f λ
where v is the speed of wave = 3 x 10^8 m/s
So, 3 x 10^8 = 660000 x λ
λ = 454.55 m
Density=mass/volume. if you know any 2 of these variables, you can figure out the missing one
Answer:
The answer is D.
Explanation:
The Law of Conservation of mass states that matter is not created nor destroyed in a chemical reaction.
