Q: Earth rotates on its axis once each day and revolves around the sun how often? Choices: - once each month - ever 3 years - every other year - once each year A:
once each year

(Question)
Q: What property allows cut logs to float on water? Choices: - polarity - heat - precipitation - density A:
(Answer)
density

Ques: Q: What do we call the solid form of hydrocarbons? Choices: - methane - shale - bauxite - coal A:
Ans: coal

(Q).
Q: A magnet can exert force on objects without touching them, as long as they are within what? Choices: - audio field - molecular field - gravitational field - magnetic field A:
(A).
magnetic field

Ques:Q: Natural convection is driven by what forces? Choices: - magnetic - thermal - gravitational - buoyant A:

Ans:buoyant

Q: In plants and algae, photosynthesis takes place in which organelles? Choices: - stems - fibroblasts - cells - chloroplasts A:
chloroplasts