Gravitational wave

High school (ages 12+)
Space & Astronomy

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/gravitational-wave

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the theoretical foundation?Predicted by Albert Einstein's General Theory of Relativity (1916)
2. What is the first direct detection event?GW150914: Merger of two stellar-mass black holes, detected September 14, 2015
3. What are gravitational waves?They are ripples in the fabric of space that travel when huge objects like black holes or neutron stars move fast. The waves stretch and squeeze distances so tiny they are smaller than an atom's nucleus.
4. How do scientists detect gravitational waves?They use giant laser machines called interferometers, like LIGO and Virgo. A laser beam is split and sent down long arms, and tiny changes in the arm lengths show a wave passed by.

Spacetime Curvature: The warping or bending of the four-dimensional fabric of spacetime by mass and energy, perceived as gravity.
Binary Merger: The process where two celestial objects, such as black holes or neutron stars, orbit each other and eventually collide and combine.
Laser Interferometry: A technique using lasers and interference patterns to measure extremely small distances or changes, crucial for gravitational wave detection.
Multi-Messenger Astronomy: The simultaneous observation of astrophysical phenomena using multiple types of signals, including electromagnetic radiation, gravitational waves, and neutrinos.