1. What is the main source of heat?
A. fire
B. sun
C. body
D. wood
2. What are the three basic states of matter?
A. solid, liquid, and gas
C. fire, air, and light
B. water, air, and land D. solid, liquid, and powder
3. What is the degree of hotness or coldness of an object?
A. elasticity
C. brittleness
B. hardness
D. temperature
4. What kind of change took place when a new substance is formed?
A. practical
C. chemical
B. physical
D. radical
5. What kind of change took place when a material just changed its phase when
heated or cooled?
A. practical
C. chemical
B. physical
D. radical
6. What process is involved in the changing of solid to liquid?
A. solidification
C. vaporization
B. melting
D. condensation
7. When you boiled water in a pot and some of the water became water vapo
what process took place?
A. solidification
C. vaporization
B. melting
D. condensation
8. What should you do with the solidified oil to change it back to its liquid for
A. heat it
B. put it in a freezer
C. shake it
D. it cannot be changed back to liquid
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Answer:
1.sun
2.solid,liquid,gas
3.temperature
4.radical
5.chemical
6.melting
7.vaporation
8.put it in a freezer
Explanation:
thats the answer in that questionss..