3326701
Description
Mind Map by Sarah Hill, updated more than 1 year ago
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Created by Sarah Hill
over 9 years ago
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Science Summer Homework
- By Sarah Hill
- Biology
- Cells
- Specialised Cells
- Sperm Cells
- Muscle Cells
- Nerve Cells
- Sperm Cells
- Specialised Cells
- Diffusion
- Diffusion occurs when particles
spread. They move from an area of
hight concentration to an area of low
concentration.
- Diffusion occurs when particles
spread. They move from an area of
hight concentration to an area of low
concentration.
- Human Body
- Digestive System
- Digestion is the breakdown of
carbohydrates, proteins and fats into
small soluble substances to be
absorbed into the blood. Amylase,
proteases and lipases are enzymes
that are important in digestion.
- Digestion is the breakdown of
carbohydrates, proteins and fats into
small soluble substances to be
absorbed into the blood. Amylase,
proteases and lipases are enzymes
that are important in digestion.
- Size
- Organelle [smallest],
cell, tissue, organ,
organ system [largest]
- Organelle [smallest],
cell, tissue, organ,
organ system [largest]
- Digestive System
- Polytunnels
- Lactic Acid
- During anaerobic respiration, glucose is
not completely broken down resulting
in a build up of lactic acid in the muscle.
The lactic acid needs to be oxidised to
carbon dioxide and water later. This
causes an oxygen debt that need to be
'repaid' after the exercise stops. This is
why we keep on breathing deeply for a
few minutes after we have finished
exercising.
- During anaerobic respiration, glucose is
not completely broken down resulting
in a build up of lactic acid in the muscle.
The lactic acid needs to be oxidised to
carbon dioxide and water later. This
causes an oxygen debt that need to be
'repaid' after the exercise stops. This is
why we keep on breathing deeply for a
few minutes after we have finished
exercising.
- Cells
- Chemistry
- Properties of Metals
- They are good conductors of heat and electricity
- they can be bent or hammered into shape easily
- They are good conductors of heat and electricity
- Bonding
- Metallic Bonding
- Metals form giant structures in which
electrons in the outer shell of the metal
atoms are free to move. The metallic bond is
the force of attraction between these free
electrons and the metal ions. Metallic bonds
are strong, so metals can maintain a regular
structure and usually have high melting and
boiling points.
- Metal - metal
- Metals form giant structures in which
electrons in the outer shell of the metal
atoms are free to move. The metallic bond is
the force of attraction between these free
electrons and the metal ions. Metallic bonds
are strong, so metals can maintain a regular
structure and usually have high melting and
boiling points.
- Covalent Bonding
- A covalent bond forms when two non-metal
atoms share a pair of electrons. The
electrons involved are in the outer shells of
the atoms. An atom that shares one or more
of its electrons will complete its outer shell.
Covalent bonds are strong - a lot of energy is
need to break them. Substances with
covalent bonds often form molecules with
low melting and boiling points, such as
hydrogen and water.
- Non metal - non metal
- A covalent bond forms when two non-metal
atoms share a pair of electrons. The
electrons involved are in the outer shells of
the atoms. An atom that shares one or more
of its electrons will complete its outer shell.
Covalent bonds are strong - a lot of energy is
need to break them. Substances with
covalent bonds often form molecules with
low melting and boiling points, such as
hydrogen and water.
- Ionic Bonding
- Metal - non metal
- When metals react with non-metals, electrons
are transferred form the metal atoms to the
non-metal atoms, forming ions. The result is a
compound called a ionic compound. In all
reactions, the metal atoms gives electrons to the
non-metal atoms. The metal atoms become
positive ions and the non-metals become
negative ions. there is a strong electrostatic force
of attraction between these oppositely charged
ions - this is called an ionic bond.
- Metal - non metal
- Metallic Bonding
- Chemical Reactions
- Polymers
- Strength of Polymers
- Low density poly(ethene) [weakest],
high density poly(ethene),
thermosetting polymers [strongest]
- Low density poly(ethene) [weakest],
high density poly(ethene),
thermosetting polymers [strongest]
- Thermosetting polymers have strong covalent
bonds between their polymer chains which
makes them ideal for use in plug sockets
- Strength of Polymers
- Atoms
- Properties of Metals
- Physics
- Stopping Distance
- Stopping distance =
thinking distance + braking
distance
- Stopping distance =
thinking distance + braking
distance
- Forces
- A force causes an
object to undergo a
specific change.
Unbalanced forces
cause a change in
speed, shape or
direction. Gravitational
forces act between
masses. Friction
opposes motion.
- A force causes an
object to undergo a
specific change.
Unbalanced forces
cause a change in
speed, shape or
direction. Gravitational
forces act between
masses. Friction
opposes motion.
- Distance-Time Graphs
- Electricity
- Energy =joule (J)
- Power = watt (W)
- Frequency = hertz (Hz)
- Energy =joule (J)
- Radiation
- Alpha Radiation
- Alpha radiation consists of alpha particles. An
alpha particle is identical to the nucleus of a
helium atom, which comprises two protons and
two neutrons.
- Alpha radiation consists of alpha particles. An
alpha particle is identical to the nucleus of a
helium atom, which comprises two protons and
two neutrons.
- Beta Radiation
- Beat radiation consists of high
energy electron emitted from
the nucleus.
- Beat radiation consists of high
energy electron emitted from
the nucleus.
- Gamma Radiation
- Gamma radiation is
very short
wavelengths, high
frequency
electromagnetic
radiation.
- Gamma radiation is
very short
wavelengths, high
frequency
electromagnetic
radiation.
- Alpha Radiation
- Life Cycle of a Star
- Stopping Distance
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