Solar ponds store solar energy
What will be an ideal response?
The energy in solar ponds is stored in the gradient between the salt and fresh
water layers.
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The reason that most extrasolar planets are found close to their parent stars is
A) the planets reflect more light the closer they are to the star. B) more of the starlight is blocked by the planet when it transits the star. C) the amount and frequency of the star's motion are both higher. D) the closer to a star, the hotter and therefore brighter the planet is. E) planets that are close to a star are heated up and therefore larger.
How many significant figures are in 0.0067?
A) 1 B) 2 C) 3 D) 4 E) 5
Rub electrons from your hair with a comb and the comb becomes
A) negatively charged. B) positively charged. C) discharged.
When an atom absorbs energy, it becomes excited.
Answer the following statement true (T) or false (F)