Accretion — Science definition
Growth as smaller bodies collide and join.
Where it is taught
- Reconstructing Early Earth — Earth’s History, Earth & Space Science, Grade 9
In use
Energy came from processes including accretion and radioactive decay.
Reconstructing Early Earth
Questions using accretion
Problem 1
Accretion is…
- growth by joining smaller bodies
- the reversal of gravity
- a method for measuring rainfall
- the same as erosion
Answer and explanation
growth by joining smaller bodies
Collisions and joining build larger bodies.