Which term is used to describe accumulation of matter leading to the growth of a larger body?

Which term is used to describe accumulation of matter leading to the growth of a larger body?

• A. Accretion
• B. Daily (Diurnally)
• C. Change in perspective
• D. Expansion

Answer: (A)

Accretion is the process of gathering material onto a central body, causing growth in mass. In space, gravity pulls in dust, ice, and gas, and when particles collide they stick together, building up larger bodies over time. This is how planets form in disks around young stars—through accretion of surrounding material. That makes it the best description of accumulation of matter leading to a larger body. The other ideas don’t fit as well: daily (diurnally) relates to the day-night cycle, not growth; a change in perspective is about viewpoint, not physical growth; expansion refers to increasing size but not specifically through accumulating matter.

Accretion is the process of gathering material onto a central body, causing growth in mass. In space, gravity pulls in dust, ice, and gas, and when particles collide they stick together, building up larger bodies over time. This is how planets form in disks around young stars—through accretion of surrounding material. That makes it the best description of accumulation of matter leading to a larger body.

The other ideas don’t fit as well: daily (diurnally) relates to the day-night cycle, not growth; a change in perspective is about viewpoint, not physical growth; expansion refers to increasing size but not specifically through accumulating matter.