What is a ROCK Class 7?
Answer: Any natural mass of mineral matter that makes up the earth’s crust is called a rock. The earth’s crust is made up of various types of rocks of different texture, size and colour. (iii) Name three types of rocks. Answer: the three types of rocks are: Igneous Rocks.
How are 7th beaches formed?
Answer: The sea waves deposit sediments along the seashores. This results in the formation of beaches. (vii) What are the ox-bow lakes? Answer: When the river enters the plains, it twists and turns forming large bends known as meanders.
What does unfold mean?
unfold verb (OPEN) to open or spread out something that has been folded: She took the old wedding dress out and carefully unfolded it.
Are rocks important?
They help us to develop new technologies and are used in our everyday lives. Our use of rocks and minerals includes as building material, cosmetics, cars, roads, and appliances. Rocks and minerals are important for learning about earth materials, structure, and systems.
What is rock one word?
noun. geology any aggregate of minerals that makes up part of the earth’s crust. It may be unconsolidated, such as a sand, clay, or mud, or consolidated, such as granite, limestone, or coalSee also igneous, sedimentary, metamorphic. any hard mass of consolidated mineral matter, such as a boulder.
Who are called chroniclers?
a person who writes descriptions of historical events as they happen: He was a photographer and chronicler of life in the poorest neighbourhoods at the end of the 19th century. Medieval chroniclers worked from monasteries and royal courts, setting down what seemed to be the most important events of the day.
How does a story unfold?
A plot is a literary term for the main events in a story. While the sequence of events in a story may unfold in different ways, all plots generally include four stages: a conflict, the rising action, the climax and the resolution.
What is rock for kid?
A rock is a solid made up of a bunch of different minerals. Rocks are generally not uniform or made up of exact structures that can be described by scientific formulas. Scientists generally classify rocks by how they were made or formed. There are three major types of rocks: Metamorphic, Igneous, and Sedimentary.
What are the two meanings of rock?
The definition of a rock is a hard mass of stone, or a broken off piece of a boulder, or is slang for a piece of crack cocaine. An example of a rock is a piece of stone found at the bottom of a cliff. An example of a rock is a piece of cocaine found during a drug raid.
What is Isrock?
A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition and the way in which it is formed. Igneous rocks are formed when magma cools in the Earth’s crust, or lava cools on the ground surface or the seabed.
What is a ROCK answer?
A rock is a solid collection of mineral grains that grow or become cemented together. Some rocks are large while others are small. Geologists (people who study rocks and minerals) classify rocks according to the way they are formed. The three main types are igneous, sedimentary, and metamorphic rocks.
What is a ROCK easy definition?
Rock, or stone, is a hard material made up of one or more minerals. Rock makes up the outer layer of Earth, called the crust. The lower parts of this layer are solid rock, or bedrock. Underneath Earth’s crust is another layer of mostly solid rock, called the mantle. Pools of melted rock, or magma, form in the mantle.