Question

1. what was one of the primary reasons for the space race? a. to promote tourism b. to build faster airplanes c. competition over space - exploration technology d. to create handheld vacuums
2. which u.s. president signed the national defense education act (ndea)? a. john f. kennedy b. dwight d. eisenhower c. lyndon b. johnson d. richard nixon
3. what was a significant technology spinoff from the space race? a. smart tvs b. camera phones c. steam engines d. electric cars
4. which earth system includes all living organisms? a. atmosphere b. geosphere c. biosphere d. hydrosphere
5. what is the composition of earths atmosphere? a. 78% nitrogen, 21% oxygen, 1% other gases b. 50% oxygen, 50% nitrogen c. 90% carbon dioxide, 10% oxygen d. 99% hydrogen, 1% helium
6. which earth system is responsible for the water cycle? a. biosphere b. hydrosphere c. geosphere d. atmosphere
7. what layer of earth contains rocks and minerals? a. atmosphere b. cryosphere c. biosphere d. geosphere
8. which system includes glaciers and ice sheets? a. hydrosphere b. atmosphere c. cryosphere d. biosphere
9. what is an essential value in science? a. avoiding skepticism b. using evidence c. keeping experiments secret d. making bold assumptions
10. why is peer - review important in science? a. it increases competition between scientists b. it ensures the information is kept private c. it allows other scientists to replicate findings d. it reduces the cost of experiments
11. what is a key sign of a reliable scientific source? a. it is recent b. it is promoted on social media c. it is written in simple language d. it is based on one scientists opinion
12. what does it mean if scientific consensus changes? a. the original findings were false b. new evidence has been considered c. all scientists were wrong d. science cannot be trusted
13. which term refers to misleading or false scientific claims often spread online? a. peer review b. hypothesis c. fake science d. big bang theory
14. which of the following describes a black hole? a. a star in its final stage b. a region where gravity is so strong that light cannot escape c. a large asteroid d. a place where stars are formed
15. what is a light - year? a. the speed of light in a vacuum b. the time it takes for light to travel one kilometer c. the distance light travels in one year d. the time it takes for the earth to orbit the sun once

Explanation:

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Answer:

Brief[SSE Completed, Client Connection Error][SSE Completed, Client Connection Error][LLM SSE On Failure]