4. Einstein's general theory of relativity made or allowed us to make predictions about the outcome of several experiments that had not yet been carried out at the time the theory was first published. Describe three experiments that verified the predictions of the theory after Einstein proposed it.

Following Einstein's proposal, three tests were conducted to verify the theory's predictions.

When you're free-falling, it's nice to be lightweight. Refracts light with gravity because there is no different both gravitational and acceleration.

The perigee shift could not be explained by Newton's equation of gravity, but general relativity provided the right orbit. 

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1. being weight-less in when you are free-falling

2. there is no difference between gravity and acceleration

3. light bends with gravity

Explanation:

the answer is minerals.