PHYSICS
Acceleration =
Change in speed divided by time taken
What does an animal cell contain?
Nucleus
Cytoplasm
Cell membrane
Mitrochondria
Ribosomes
What is a chemical reaction?
A change that takes place when reactants form a product
Changes how atoms are bonded together
What forces act on an object?
name at least 4
Upthrust
Friction
Thrust
Weight
Air resistance
Gravity
What is the function of the cell membrane?
It controls the movement of substances such as oxygen, glucose and carbon dioxide into and out of the cell
What are the main features of the periodic table?
Relative atomic mass
Symbol
Atomic number
when an area of warm particles expand and becomes less dense than cooler areas. the warm air rises, and cooler particles move into empty space left by warm particles.
convection currents
When a species changes to be better suited for their environment or habitat
Adaptation
What are molecules?
Groups of atoms joined by covalent bonds
a cloud of gas and dust in space is a
nebula
Natural Selection
What is the process that enables organisms that are best suited for the environment to live and pass on their genetic traits.
What do metal and acid produce?
Metal hydroxide and hydrogen gas
Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.
True or False
True
Fights disease and infection. Made by the lymphatic system.
White blood cells
Another term for being chemically inactive is..
Inert