To check your understanding of the lesson, complete the sentences below. Choose your answer inside the box. space-time accelerating star mass gravity 43 escape velocity black holes sun lensing velocity 1. General relativity deals with __frames of reference. 2. General relativity considers as a product of warping of space-time. 3. is a four-dimensional space composed of a three dimension of space and one dimension of time. 4. The of a cosmic body is proportional to the distortion it can create in space-time. 5. General relativity like the special relativity has consequences such as: __________________perihelion shift; gravitational of light and the existence of . 6. Mercury as the nearest planet to the is greatly affected by the sun’s warping of space-time. 7. About arcsec per century discrepancy in Mercury’s perihelion shift was calculated using the general relativity. This value is equivalent to the difference in the observed procession in the 19th century and the precession calculated using Newtonian gravitation. 8. Gravitational happens when light emitted by distant stars or galaxies bends due to the curvature of space-time created by a massive object in the universe. 9. Black holes are extremely dense collapsed that not even light can escape from its gravitational field. 10. is the speed an object must attain to escape a massive body