The energy in moving water or wind is called:
A. Thermal energy
B. Mechanical energy
C. Solar energy
D. Chemical energy
Which blood vessels carry blood to the heart?
A. Arteries
B. Capillaries
C. Veins
D. Venules
Which is the heaviest naturally occurring element?
A. Lead
B. Uranium
C. Gold
D. Iron
Which planet is known as the Blue Planet?
A. Mars
B. Jupiter
C. Earth
D. Neptune
The organ responsible for producing insulin is:
A. Liver
B. Pancreas
C. Kidney
D. Stomach
What is the process by which plants make their food?
A. Respiration
B. Photosynthesis
C. Digestion
D. Fermentation
The process by which solid changes to liquid is called:
A. Condensation
B. Melting
C. Evaporation
D. Sublimation
Which gas do humans exhale?
A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Hydrogen
The fastest land animal is:
A. Tiger
B. Lion
C. Elephant
D. Cheetah
Which vitamin is essential for blood clotting?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K