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science xmas exam

science

QuestionAnswer
what is a cell the smallest working unit of a living organism
what are the indivual parts of a cell called they are called cell structures
what are the two types of cells animal cells and plant cells
what are the parts of an animal cell cell membrane Nuclues cytoplasm mitochondria Ribosome
what are the parts of a plant cell cell membrane Nuclues, cytoplasm, mitochondria, Ribosome vacoule, cell wall, chloroplast
what is the area of an object the amount of the object enclosed within its lines
what is the volume of an object the amount of space an object takes up
what is accuracy how close a measured value is to its actual value
what is precision how close together a set of measurments are to each other
what is mass a measurment of how much matter is in a body
what is density the mass of 1cm³ of a substance
what is the formula for density density=mass over volume
what is matter anything that takes up space and has mass
what is a melting point the temperature at which a solid turns into a liquid
what is an atom the smallest particle of an element that still has the properties of that element
wht is a subatomic particle a particle found inside an atom
what is an atomic number the atomic number of an atom is the number of protons in an atom
what is a mass number mass number = number of protons+number of neutrons
what is a celestial body is a naturally made object outside the earts atmosphere
what is a satelite is a objectborbiting a celestail body of large mass
what is the formula for speed speed = distance over time
what is displacment distance in a given direction
what is the formula for velocity velocity=change in displacement over time taken
what is accelaration the change in volocity per second
what is the formula per acceleration acceleration=change in velocity over time taken
what colour does acid turn litmus paper it turns it from blue to red
what colour does a base turn litmus paper it turns it from red to blue
what is an indicator a compound that shows by means of a colour dicatorischangevwhether a substance is acidic or basic
what is energy the ability to do work
what is the prinipale of conservation of energy energy cannot be created or destroyed but can only be changed from one form to another
whats the formula for energy effcientcy energy effciency=useful energy output over energ input×100 over one
what is a renewable energy source a source that will never be used up
Created by: 22cking
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