True or False. Write your answer on your answer sheet.
1. About 200 tropical cyclones enter the Philippine
Area of Responsibility each year.
2. Tropical cyclones require cold ocean waters to be
able to develop
3. The lowest air pressure is at the eye of a tropical
cyclone.
4. The orbit of an asteroid is more rounded and less
elliptical than the orbit of a comet. 5. A meteor
and a meteor shower are light phenomena; they are
not stars
6. Comets are rocky fragments and are believed to
be remnants from the formation of our solar system
billion years ago.
7. Asteroids, comets and meteors are parts of the
solar system. They also revolve round the sun.
8. A meteoroid is a chunk of dust and ice that orbits
around the sun and slowly vaporizes as it goes near
the sun
9. Comets are often seen in the night sky as
"shooting stars”.
10. Asteroid usually come from the Oort cloud
which is beyond our solar system.​

Fill in the blanks with the numbers is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance

Humidity is to blame for that muggy, steamy feeling you experience on some hot summer days. what gas in the atmosphere causes humidity? a) oxygen b) hydrogen c) nitrogen d) water vapor

Boiling water is an example of physical change. true or false