energy can neither be _____ nor ______; rather, it can only be ________ or _______ from one form to another.
energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.
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In any change in energy there is always ______
some wasted
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what is energy efficiency
Energy efficiency is a measure of how much useful energy you get out an object from the amount put in
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Gravitational potential energy formula
GPE = mgh
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kinetic energy formula
K.E. = 1/2 m v2
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Density formula
P=density (Kg/M3)P=M3V
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what is internal energy
the energy in a system arising from the relative positions and interactions of its parts.
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Specific heat capacity formula
c = Q / (m * ΔT)
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temperature increase depends on
the mass of an object & the substance
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specific lantern heat formula
Q = m*L
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the cell theory
all living things are made of cells and the cell is the simplest unit of living things
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Eukaryotes
has DNA in a nucleus and membrane bound organelles
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prokaryotes
has free DNA and only ribbosomes
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what is mitosis
a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus
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what is a stem cell
a cell that can become a specialised cell e.g. a brain cell
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what is Work Done On A gas.
Work is the transfer of energy by a force. When gas is compressed a force is used to compress it. Energy is transferred, so work is done The internal energy of the gas increases.
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what is the difference between the different types of radiation
There are three different types of radiation Alpha, Beta and Gamma. Each of these have different lengths of penetration through materials, alpha radiation can be blocked by a single sheet of paper where gamma radiation needs large amounts of concrete
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what is radioactive decay
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation
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what is alpha decay
Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle
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formula for surface area to volume ratio
3 / 1 = 3.
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What happens when potato is placed in concentrated sugar solution?
The potato will lose mass because the water particles in the potato move out to the concentrated sugar since there are more water molecules in the potato(From higher water potential to lower water potential).
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Other cards in this set
Card 2
Front
energy can neither be _____ nor ______; rather, it can only be ________ or _______ from one form to another.
Back
energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.
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