Question

Which statements accurately describe volcanic landforms? Check all that apply.

Batholiths cooled deep inside Earth.
Dikes cut across horizontally.
A geyser spouts water that is heated deep inside Earth.
Dome mountains form from cinder cones.
Geysers and hot springs are caused by hydrothermal activity.

Answer 1

Correct statements:
- Batholiths cooled deep inside Earth. (True — batholiths are large intrusive igneous bodies that solidified slowly underground.)
- A geyser spouts water that is heated deep inside Earth. (True — geysers eject groundwater heated by hot rock or magma below.)
- Geysers and hot springs are caused by hydrothermal activity. (True — both are surface expressions of heated groundwater.)

Incorrect statements:
- Dikes cut across horizontally. (False — dikes cut across rock layers vertically or steeply; sills are the horizontal intrusions.)
- Dome mountains form from cinder cones. (False — dome/lava domes form from viscous lava; dome mountains are usually uplift features, while cinder cones are small pyroclastic volcanoes.)