The center of the Earth is primarily composed of:
A. Oxygen
B. Iron and nickel
C. Silicon
D. Carbon
The process of solid changing directly to gas is:
A. Freezing
B. Evaporation
C. Condensation
D. Sublimation
Which planet is famous for its rings?
A. Jupiter
B. Uranus
C. Saturn
D. Neptune
The chemical symbol for sodium is:
A. Na
B. So
C. Sd
D. Sn
The human body’s smallest bone is found in the:
A. Hand
B. Foot
C. Ear
D. Nose
What is the common name for sodium bicarbonate?
A. Baking powder
B. Salt
C. Baking soda
D. Vinegar
The process of converting sugar to alcohol is called:
A. Fermentation
B. Photosynthesis
C. Evaporation
D. Fermentation
The most abundant element in the universe is:
A. Oxygen
B. Carbon
C. Hydrogen
D. Helium
The main function of red blood cells is:
A. Fight infections
B. Transport oxygen
C. Produce hormones
D. Clot blood
Which organ stores bile produced by the liver?
A. Stomach
B. Pancreas
C. Gallbladder
D. Small intestine