Felsic is a compositional term, describing the mineral content of igneous rocks, not whether they are intrusive or extrusive.

Here's the breakdown:

* Felsic: Rocks with a high silica content, often light in color and containing minerals like quartz, feldspar, and mica.

* Intrusive: Rocks that solidify beneath the Earth's surface, cooling slowly and often forming large crystals.

* Extrusive: Rocks that solidify on the Earth's surface, cooling quickly and often forming small crystals.

Examples of felsic rocks:

* Intrusive: Granite, Diorite

* Extrusive: Rhyolite, Andesite

So, a felsic rock can be either intrusive (like granite) or extrusive (like rhyolite).