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VR Tour For Std. 8 Ch. 15. Some Natural Phenomena

What's Included in Virtual tour of this chapter

Atom is the smallest unit into which matter can be divided without the release of electrically charged particles. Every atom comprises subatomic particles such as electrons, protons, and neutrons. We will also explore what phenomena cause lightning in the atmosphere and also its effects on the human body. Another important phenomenon that we will study in this chapter is the Earthquake. By using a seismograph, we can measure the intensity of the earthquake.

Virtual tour 1 Two kinds of charges after rubbing materials

Virtual tour 1: Two kinds of charges after rubbing materials

Electrons have a negative charge on them while protons have a positive charge. Objects having an excess of electrons are called negatively charged while an object having a shortage of electrons is called positively charged. When similar charges come near, they repel each other and when opposite charges come near, they attract each other. And charges can be transferred using a conductor.

Virtual tour 2 What causes Lightning

Virtual tour 2: What causes Lightning

In this virtual tour, we will learn how lightning occurs. The negative charges and positive charges of the clouds attract each other, which results in the production of electric sparks in the form of a streak of light accompanied by a sound. The streak is called lightning. The lightning conductor is a device used to protect buildings from the effects of lightning.

Virtual tour 3 Earthquake

Virtual tour 3: Earthquake

Earthquakes are caused because of the shaking of the surface of the earth. Here two blocks of the earth slip into each other and cause vibrations. The main cause of the earthquake is disturbance inside the crust of the earth.

Virtual tour 4 Seismograph to detect and record earthquake

Virtual tour 4: Seismograph: to detect and record earthquake

We have learned in the previous virtual tour that the earthquake is caused by the movement of plates and the tremors produce waves on the surface of the earth. These are called seismic waves. Those waves are recorded by an instrument called the seismograph. In this activity, we will understand how a seismograph works.