Chemistry
What is the phenomenon of liquid becoming a gas?
evaporation.
What is the force that interferes with the movement of the two object?
frictional force.
What is the innermost part of Earth?
Core
what is the process by which plants make nutrients using water and carbon dioxide?
Photosynthsis.
What is the star which locates at the middle of solar system?
Sun
Why does water become more voluminous when it coagulates?
The water particles extends.
What is the force that causes an object to move in the opposite direction to gravity?
buoyant force.
Which planet have the least density in the solar system?
Saturn
Where does photosysthsis take place?
Chloroplast
why is Venus the brightest planet in the solar system?
It has a thick atmosphere.
Is water a elementary substances?
No. it is not, it is a molecules.
Why are the bottom of a hiking shoes so hard?
To make the frictional force stronger so that you won't slip on the mountain.
What phenomenon has caused Jupiter to have a Great Red Spot?
Whirlpool
What do both animal and plant cells have?
mitochondria and nucleus
Why does the shape of the moon change every month?
The moon orbits Earth.
what are particals that became postively or negatively charged by atoms losing or gaining electrons?
Ion.
What is the name of the theory written by Einstein?
Theory Of Relativity.
What is the phenemenon in which the moon is obscured by sunlight?
eclipse
what are produced by photosynthsis?
Glucose(grape sugar) and oxygen
Why can't we land on Jupiter and Saturn?
They are composed with gas. we can't land on the gas because they don't have surface
what is the lighest element after hydrogen? ( If you drink it, your voice will be weird.)
helium.
what is the force of a substance to return to its original shape?
Elasticity force
When was the pluto discovered?
1930
What is the best temperature for photosynthesis?
30~40
How many planets in solar system have rings around them? and what are they?
4, which are Jupiter, Saturn, Uranos and Neptune.