Explain why S waves are unable to pass through the outer core
What will be an ideal response?
Answer: S waves cannot pass through the outer core because it is liquid. Because S waves are shear waves, they propagate energy by shifting intergrown mineral crystals. Since the mineral crystals in a liquid are not connected, they cannot be shifted to transfer the energy.
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A. In response to fertilizers, pesticides and irrigation. B. Even in severe drought conditions. C. With primitive farming techniques and no chemical use. D. Even in severe drought conditions and with primitive farming techniques and no chemical use. E. In all conditions where standard crops fail.
The economic value of biodiversity and ecosystems services is difficult to assess because
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Which of the following is the conjugate base of acetic acid, CH3COOH?
A) H3O+ B) CH3COOH2+ C) CH3COO- D) OH-
The primary factor which determines what type and how much radiation an object emits is its:
A) color. B) density. C) conductivity. D) temperature. E) size.