Q: What celestial body is often discovered because it causes a star to move or to dim? Choices: - satellite - asteroid - comet - exoplanet A:
exoplanet

Q: The axial skeleton forms the vertical, central axis of the body and includes all bones of the head, neck, chest, and back. it serves to protect the brain, spinal cord, heart, and what else? Choices: - ovaries - knees - intestines - lungs A:
lungs

Q: Q: Carbon released by burning fossil fuels contributes to what effect in the atmosphere? Choices: - shielding effect - smog effect - cloud effect - greenhouse effect A:
A: greenhouse effect

Question: Q: What hits the eardrum and causes it to vibrate? Choices: - cilia - decibels - microwaves - sound waves A:
Answer: sound waves

*Question*
Q: What is used to darken images of the sky? Choices: - close-up filter - uv filter - neutral density filter - polarizing filters A:
**Answer**
polarizing filters

(Question)
Q: What occurs when the crests of one wave overlap the troughs, or lowest points, of another wave? Choices: - harmful interference - random interference - constructive interference - destructive interference A:
(Answer)
destructive interference