Part E Remain in the To Scale tab, and keep path visibility on. In the central menu, turn on Gravity Force. Begin a new
Planet-Moon simulation. Observe approximately how long it takes for the moon to complete an entire orbit. Pause the
simulation and move the moon closer to the planet. What effect did this move have on the gravitational attraction
between the two bodies? What effect did this move have on the orbital period?

b.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.