Einstein's Theory of General Relativity

Who was Einstein's idol, who initially described gravity as an attractive force between two bodies?

• James Clerk Maxwell

• Niels Bohr

• Isaac Newton

• Galileo Galilei

What did Einstein's thought experiment with a sealed container demonstrate about gravity?

• Gravity does not affect objects in motion.

• Gravity is stronger in space.

• Gravity is indistinguishable from acceleration.

• Gravity is a force that can be easily measured.

What phenomenon did Einstein's theory accurately predict regarding Mercury's orbit?

• The precession of Mercury's orbit around the sun.

• Mercury's orbit is unaffected by other planets.

• Mercury's orbit does not change over time.

• Mercury's orbit is perfectly circular.

How did scientists confirm Einstein's prediction about light bending?

• By observing a solar eclipse.

• By observing a lunar eclipse.

• By measuring the speed of light in a vacuum.

• By calculating the distance to the sun.

What effect does general relativity have on clocks in stronger gravitational fields?

• Clocks tick faster.

• Clocks tick slower.

• Clocks stop ticking.

• Clocks are unaffected.

Why do GPS satellites need to correct for the effects of general relativity?

• They are far from Earth's gravitational field.

• They are affected by solar winds.

• They are moving at high speeds.

• They are closer to the sun.

What are gravitational waves?

• Light waves that bend around stars.

• Sound waves that travel through space.

• Ripples in spacetime caused by massive objects.

• Waves in the ocean caused by gravity.

What event led to the first detection of gravitational waves?

• The formation of a new galaxy.

• The collision of two black holes.

• The explosion of a supernova.

• The alignment of planets.

How do gravitational waves help us study the universe?

• By letting us study massive objects through a new spectrum.

• By helping us understand the speed of light.

• By allowing us to see electromagnetic radiation.

• By providing a new way to measure time.

What did the detection of gravitational waves confirm about Einstein's theory?

• That it is limited to electromagnetic radiation.

• That it only applies to small objects.

• That it was incorrect.

• That it accurately predicts spacetime phenomena.