Characteristic Comet Asterold 1.) Origin Main Asteroid Belt 2.) Irregular/varried eeShape 3.) More rounded/less elliptical Orbit 4.) 75-100,000 years Orbital period 5.) Rock, iron, nickel Chemical composition
Electron Affinity
When an element undergoes a chemical reaction, it either gains energy or loses energy. This gain or loss of energy is due to the phenomena that occur at atomic level. During reaction, atoms either gain electrons from other atoms or lose electrons to other atoms, and in that process, energy is produced.
P-Block Elements
Elements which are present on the right side of the periodic table are called p-block elements. In addition to the noble gases, they include the families of boron, mercury, nitrogen, oxygen and fluorine. These elements have diverse real-life implementations that we regularly experience around us.
Metals and Non-metals
The periodic table is composed of metals, semi-metals and nonmetal elements. The physical and chemical properties of metals and nonmetals differ from each other. The study of metals and nonmetals will help one to understand the appropriate application of the particular element.
![meteor
meteoroid that survives and reaches the Earth's surface
C. meteorite
B. meteor shower
8. Which of the following best describe meteors?
A. A light phenomenon that occurs when a meteomid burns un a t enters the Earth's atmosphere
B.A streak of light or a fast moving bright object.
C.A & Bare correct.
D. None of the above
D.meteorok
9. What will happen if a comet or an asteroid hits Earth?
A. impact craters will form
C. mass extinction of plants and animals
B. living things will die
D. all of these
10. Which characteristics do asteroids and comets have in common?
A. origin
composition
B. orbital period
C. shapes
D. chemical
II. Fill in the table completely with the characteristics of comets and asteroids.
Characteristic
Comet
Asteroid
1.)
Origin
Main Asteroid Belt
2.)
Irregular/varried
eer Shape
3.)
More rounded/less elliptical
Orbit
4.)
75-100,000 years
Orbital period
5.)
Rock, iron, nickel
Chemical composition
elem
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