Question

question 6 reflecting telescopes use ______ to collect and focus light. curved mirrors lenses flat mirrors a prism question 7 artificial satellites have been useful ______. to measure the distance between earth and the moon in calculating the speed at which light travels in the field weather prediction in taking close - up photographs of other planets

Explanation:

• For Question 6: Reflecting telescopes use curved mirrors to collect and focus light. Lenses are used in refracting telescopes, flat mirrors don't focus light in the way needed for telescopes, and prisms are not used for collecting and focusing light in telescopes.
• For Question 7: Artificial satellites are widely used in weather prediction as they can monitor cloud - patterns, temperature, and other weather - related data from space. Measuring the Earth - moon distance is mainly done through laser ranging, calculating the speed of light is a laboratory - based activity, and taking close - up photographs of other planets is mainly done by space probes.

Answer:

• Question 6: A. curved mirrors
• Question 7: C. in the field weather prediction