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end of roatation test revision - Coggle Diagram
end of roatation test revision
space
phases of the moon
The Moon’s appearance changes over time when viewed from Earth. Sometimes, the Moon is not easily seen in the sky and at other times it can appear as a thin
crescent
, a full circle – or somewhere in between.
A Moon phase is the shape of the visible part of the Moon, and this changes gradually over the course of a
lunar month
new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter and waning crescent
rocket
A rocket is a powered vessel or missile which is designed to deliver a payload such as people, satellites or ballistics. A satellite is an orbital object which only has sufficient onboard thrust power to allow for minor course or navigational corrections
satalites
in astronomy, a satellite is an object that orbits (goes around) a planet. There are several hundred natural satellites, or moons, in our Solar System. Thousands of artificial (human-made) satellites have also been launched since 1957.
seasons
The seasons are linked to the 23° tilt of the Earth's axis. There is a time-lapse animation of the Earth throughout the year showing the northern hemisphere pointing towards the sun during its summer and pointing away from the sun during its winter.
day and night
the Sun does not illuminate the whole Earth at once; it lights up one half at a time. This is why we have light and darkness, day and night. It will be daytime on the side of the Earth facing the Sun and night time for the side of the Earth facing away from the Sun
gravity
Gravity is a force that exists everywhere. It pulls all things with mass or energy toward one another.
We commonly experience gravity by being pulled downwards by the Earth.
Gravity keeps all of the planets (including Earth) in orbit around the Sun. It also keeps the Moon in orbit around the Earth.
genetics and enviroment
cloning:The method for adult cell cloning is:
the nucleus is removed from an unfertilised egg cell
the nucleus from an adult body cell, such as a skin cell, is inserted into the egg cell
an electric shock stimulates the egg cell to divide to form an embryo
these embryo cells contain the same genetic information as the adult skin cell
when the embryo has developed into a ball of cells, it is inserted into the womb of an adult female to continue its development
Sexual and asexual reproduction
Asexual reproduction does not involve sex cells or fertilisation. Only one parent is required, unlike sexual reproduction which needs two parents. Since there is only one parent, there is no fusion of gametes and no mixing of genetic information. As a result, the offspring are genetically identical to the parent and to each other. They are clones.
Sexual reproduction allows some of the genetic information from each parent to mix, producing offspring that resemble their parents, but are not identical to them. In this way, sexual reproduction leads to variety in the offspring. Animals and plants can reproduce using sexual reproduction.
In sexual reproduction new organisms are produced from the fusion of a male sex cell with a female sex cell. This fusion of gametes is called fertilisation.
Sex cells are also known as gametes. Male gametes are made by male reproductive structures. Female gametes are made by female reproductive structures.
Selective breeding is A species is a group of organisms that interbreed to produce fertile offspring. Selective breeding is when organisms are deliberately bred so their offspring have the desirable characteristics.
Genetic engineering Genetic engineering involves introducing a gene from one organism into the genome of another organism to introduce desirable characteristics. Genetic engineering is also known as genetic modification.
Biodiversity: Biodiversity — short for biological diversity — is the variety of all living things and their interactions. Biodiversity changes over time as extinction occurs and new species evolve. Scientists often speak of three levels of diversity: species, genetic, and ecosystem diversity.
waves
Frequency = speed / wavelength
Speed = frequency x wavelength
Wavelength = speed / frequency
Frequency = hz
Speed = m/s
wavelength= m
Frequency = 1/t
Waves:
Perpendicular to the direction of energy.
Longitudinal
Transversal
Amplitude
Peak
Soundwaves
Oceanic waves
Parallel to the direction of energy
Amplitude height from the base to the peak
Radiation
Wavelength is from peak to peak
Trough
Ultrasound
Not radioactive
100mhz
Higher frequency
Help to see foetus
Use of ultrasound
20 - 20000
Some animals can hear ultrasound
Sonar can be used to detect prey/predators
Echolocation
forensics
Blood has different types. And there is things inside the blood like plateletts,
White blood cells, red blood cells, plasma.
Plateletts clot blood
Red blood cells carry oxygen.
Higher the blood splat falls from the bigger the splat is once landed
Oxygen - relights
Carbon dioxide - bubble limewater
Chlorine - bleaches litmus paper
Hydrogen makes a pop
Chlorine - bleaches litmus paper
Fingerprints show up when theres a dust powder cellatape
And shiny surfaces.
Finger prints are unique
Dna datarbase
When finding chloride white solid bits float to the top.
When finding sulfate a white precipitate appears.
And finding carbonate white gas bubbles appear