The Sun's lowest position in the sky occurs at the ________
Fill in the blank(s) with correct word
winter solstice
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Which of the following would violate the law of charge conservation?
a. A neutron, which has zero charge, becoming an electron and a proton. b. A plastic rod becoming charged by gaining electrons from the fur rubbed against it. c. A glass rod becoming positively charged by being rubbed with silk. d. An electroscope losing its charge by being grounded. e. An electron becoming a positron which has the same mass as an electron and a positive charge of the same magnitude.
Because of its distance, the Sun does not have any effect on Earth's ocean tides.
Answer the following statement true (T) or false (F)
What happens when a star like the sun exhausts its core hydrogen supply?
A) Its core contracts, but its outer layers expand and the star becomes bigger and brighter. B) It contracts, becoming hotter and brighter. C) It contracts, becoming smaller and dimmer. D) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness. E) It expands, becoming bigger but dimmer.
Magnetism results from
a. the movement of magnetic particles. b. the movement of electric charge. c. Earth's magnetic field. d. the movement of magnetic charge.