about how many diffrent rocks are there
Directly from the site I gave you:
"The three classes of rocks: the igneous, the sedimentary and the metamorphic — are subdivided into many groups. There are, however, no hard and fast boundaries between allied rocks. By increase or diminution in the proportions of their constituent minerals they pass by every gradation into one another, the distinctive structures also of one kind of rock may often be traced gradually merging into those of another." What this means is there is no exact perfect definition of what a rock is. If I were you. I'd just list the three basic types: igneous,sedimentary and metamorphic
it still does not say it!!!!!!!
i KNOW THERE ARE THREE MAIN TYPES OF ROCKS!!!!! BUT I CAN NOT UNDERSTAND YOU IM ONKLY IN 4TH GRADE WHAT GRADE ARE YOU IN
I apologize if my previous response was not clear enough. To answer your question in a simpler way, there are thousands of different types of rocks that have been identified and categorized by scientists. Each type of rock can have various subtypes and variations based on their mineral composition, texture, and formation process.
In general, there are three main types of rocks: igneous, sedimentary, and metamorphic. Igneous rocks are formed from cooling and solidification of molten materials such as magma or lava. Sedimentary rocks are formed from the accumulation and compaction of sediments, which can include fragments of other rocks, minerals, and organic matter. Metamorphic rocks are formed when existing rocks undergo high pressure, temperature, or chemical changes.
While it is difficult to provide an exact number of different rocks, it is safe to say that there are thousands of known types. Geologists continually study and discover new rocks, and different regions around the world can have their own unique rock formations.
If you are looking for more specific information about rocks for a school project or topic, I suggest talking to your teacher or a librarian who can help you find age-appropriate resources or books on rocks for 4th-grade level.