GENERAL SCIENCE

What is the chemical symbol for water?

• HO

• H2O

• H202

• OH2

Which part of the plant makes food?

• roots

• stems

• leaves

• flowers

Which gas do plants take in for photosynthesis?

• Oxygen

• Nitrogen

• Hydrogen

• Carbon dioxide

What is the center of an atom called?

• Shell

• Nucleus

• Proton

• Neutron

What force pulls objects toward the Earth?

• Magnetism

• Friction

• Gravity

• Electricity

What is the main function of red blood cells?

• Fight infection

• Clot blood

• Make hormones

• Carry oxygen

Which is the hardest natural substance on Earth?

• Iron

• Gold

• Diamond

• Quartz

Which planet is closest to the Sun?

• Earth

• Mercury

• Mars

• Venus

Which of the following is an example of a chemical change?

• Melting ice

• Breaking glass

• Burning wood

• Boiling water

Which organ helps in breathing?

• stomach

• lungs

• kidney

• liver