Body Systems
What is the purpose of all body systems?
to help the body maintain homeostasis.
What unit do we use when describing force?
Newtons.
What is the small number in a chemical equation called?
a subscript.
It is the distance between the earth and the sun.
What are the 3 types of late boundaries?
Describe the difference between speed and velocity.
Speed is a measure of distance traveled in a given amount of time while velocity is the speed in a given direction.
How many atoms are in this formula 2Ga(OH)₃.
8.
Describe the life cycle of a main sequence star.
Main sequence star → Red giant → Planetary nebula → White dwarf.
Why do we have seasons?
Due to the axial tilt of the earth.
What is the difference between a tendon and a ligament.
Ligaments connect bone to bone and tendons connect muscle to bone.
Describe the difference between distance and displacement.
Displacement is the difference between the starting point and the end point while distance is the total path a person/object travels.
What does the atomic number above the element symbol mean on the periodic table?
The number of protons that element possess.
What happens when a supermassive star reaches the end of its life cycle?
It will go supernova and turn into a neutron star or black hole depending on the size.
What are the 6 kingdoms?
Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia.
How do the circulatory system and respiratory system interact with one another?
The respiratory brings in oxygen and then through a process called gas exchange transfers it to the blood that takes the oxygen to the rest of the body and brings back carbon dioxide for the respiratory system to remove through an exhale.
Describe Newtons Third Law.
For every action there is an equal and opposite reaction.
What happens to the atoms in a chemical equation when they go from the reactants side to the products side?
Nothing since matter cannot be created or destroyed it can only change form, so it either remains the same or becomes a part of a new compound.
What is the purpose of the HR diagram?
The ‘Hertzsprung-Russell’ diagram is a graph that shows the relationship that exists between the average temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away.
How does thermal energy transfer?
From a region of high temperature to a region of low temperature.
Name all 11 body systems .
Nervous, Muscular, Skeletal, Excretory, Respiratory, Circulatory, Endocrine, Reproductive, Integumentary, Digestive, Immune.
Describe Newtons Second Law.
Newton's second law of motion states that the net force acting on an object is directly proportional to its acceleration and inversely proportional to its mass, commonly expressed as F = MA (force equals mass times acceleration).
What are the 5 signs of a chemical change?
Gas production, light emission, precipitate formation, temperature change and color change.
What evidence do we have that the universe is expanding?
That far away galaxies are experiencing a redshift, this indicates that they are moving away from us.
What does (Do Kings Play Chess On Fine Grain Sand) stand for?
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.