Science 8 Flashcards
What is the primary gas found in the atmosphere of Mars?
Carbon Dioxide (CO2), about 95% of Mars’ atmosphere.
How many bones are in the adult human body?
206 bones.
What causes ocean tides on Earth?
The gravitational pull of the moon and the sun on Earth’s oceans.
Name the three types of rock in the rock cycle.
Igneous, sedimentary, and metamorphic.
What is the powerhouse of the cell known as?
Mitochondria.
What is the term for the amount of matter in an object?
Mass.
Which element has the highest electrical conductivity?
Silver.
What is the common name for dihydrogen monoxide?
Water (H2O).
What gas do plants absorb from the atmosphere for photosynthesis?
Carbon Dioxide (CO2).
What is the pH value of pure water at room temperature?
Approximately 7, neutral.
What is the measure of the total amount of energy in a system called?
Internal energy.
Name the largest planet in our solar system.
Jupiter.
What is the effect of a force applied at a distance from an axis of rotation called?
Torque.
What type of celestial body is the Sun?
A star.
What is the name of the process by which plants lose water through their leaves?
Transpiration.
What is the term for a material that allows heat or electricity to pass through it easily?
Conductors.
What force keeps the planets in orbit around the Sun?
Gravity.
What is the primary component of the Earth’s core?
Iron.
Which organ in the human body is responsible for filtering blood?
Kidneys.
What type of bond is formed by the sharing of electron pairs between atoms?
Covalent bond.
What is the term for the change of a substance from a solid to a gas without passing through the liquid phase?
Sublimation.
Name the particle in an atom that has a positive charge.
Proton.
What is the term used to describe the study of heredity and the variation of inherited characteristics?
Genetics.
What is the name given to the first law of thermodynamics?
The Law of Conservation of Energy.
What phenomenon explains the bending of light when it passes from one medium to another?
Refraction.
