Biology
This is the powerhouse of the cell
Mitochondria
The largest organ of the human body
Skin
What is the chemical compound of water?
H20
This force keeps you from floating away from earth
Gravity
What is the imaginary line that divides the Earth's middle into the Northern and Southern Hemispheres
The Equator
This green pigment allows plants to capture sunlight for photosynthesis
Chlorophyll
This dome-shaped muscle helps you breathe by contracting and expanding the lungs
Diaphragm
This gas makes up about 78% of the earth's atmosphere
Nitrogen
What is the unit used to measure electric current?
Ampere (amp)
This bright natural display is sometimes called the Northern Lights
Aurora Borealis
These threadlike structures carry DNA and determine inherited traits
Chromosomes
The tough connective tissue that attaches muscle to bone
Tendon
What element has atomic number 79?
Gold
The bending of light as it passes from air into water is called what?
Refraction
This type of rock forms from the cooling of molten material
Igneous rock
What does DNA stand for?
Deoxyribonucleic Acid
This small, butterfly-shaped gland in the neck regulates metabolism
Thyroid gland
The only metal that is liquid in room temperature
Mercury
This law states that for every actions, there is an equal and opposite reaction
Newton's third law of motion
What do you call the solid outer layer of the Earth, including the crust and upper mantle?
Lithosphere
This process describes how water moves across a membrane from an area of low solute concentration to high solute concentration
Osmosis
This cranial nerve is responsible for smell
Olfactory Nerve (Cranial Nerve 1)
This type of bond is formed when electrons are shared between atoms
Covalent bond
This effect makes the pitch of a passing ambulance siren sound higher as it approaches and lower as it moves away.
The Doppler Effect
This rare, reddish mineral forms when iron oxidizes and is a key ore for steel production
Hematite