Guide to edexcel p1b

It has got everything you have got to learn for a edexcel gcse P1b paper. Good luck with your revision.

HideShow resource information
Preview of Guide to edexcel p1b

First 344 words of the document:

Edexcel core science Physics P1b
Items in bold are for higher tier only
Topic 11 -- Now You See it, Now You Don't
There are many different types of waves and these have many uses.
For example, in the natural world, light waves enable us to see
objects; sound waves enable us to communicate aurally; infrared
waves from the Sun provide the Earth with the thermal energy that
is needed to sustain life. This topic explores how specific types of
waves are suited for particular applications, for example, X-rays
for examining the human body, ultrasound for scanning a fetus in
the womb, ultraviolet waves for detecting forged banknotes and
microwaves and infrared waves to monitor the weather.
This topic provides the opportunity to demonstrate that there are
some questions that cannot yet be answered by science, for
example, is the radiation used by mobile phones safe? This can lead
to ethical considerations, for example, the building and positioning
of mobile phone masts.
Have you ever wondered?
Why does helium make your voice go high?
Why do scientists believe there could be an even more
catastrophic tsunami than the last one in 2004? Global Warming
How do we know the Moon is 380,000 km away? Manned mission/
space probes
How do you see an unborn baby? ultrasound
How can forged bank notes be detected? Ultraviolet
How do X-rays work? They get absorbed by muscles and
reflected by bones so the bones show up on a x-ray
How can microwaves be used to forecast the weather?
Is too much exposure to mobile phone radiation dangerous? It
could be as the waves could travel up your brain
Why is the picture better on a digital TV? If the signal is
affected by noise you can easily switch it back the original as
there is only 2 types of information in a digital, on and off.

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Do the night vision goggles you see in the movies and on TV really
Why does your skin burn quicker in the midday Sun? Your skin
exposed more to ultraviolet rays from the sun in midday this is
because it can damage your skin.…read more

Page 3

Preview of page 3

Here's a taster:

ultrasound Fetus
You should be able to:
evaluate the evidence that microwave radiation from mobile
phones or
masts may pose health risks, and discuss how this has been
reported in the media
explain the characteristics of ultraviolet light in terms of
frequency, energy and wavelength and relate them to the
dangers of overexposure, eg UVA, UVB, UVC
describe the detrimental effects to a person, of excessive
exposure to the following waves and explain this in terms of
increasing frequency and…read more

Page 4

Preview of page 4

Here's a taster:

× wavelength
use the equation: speed = distance/time
including applications where waves are reflected back to source
use data about seismic waves passing through the Earth to
explain its structure
describe similarities and differences of waves in the
electromagnetic spectrum
recall that all electromagnetic waves travel at the same speed in
a vacuum.…read more

Page 5

Preview of page 5

Here's a taster:

Topic 12 -- Space and its Mysteries
Scientists have made it possible for people to land on the Moon and
have launched missions to explore Mars and other planets and
moons. It may not be long before people are able to take holidays in
space, perhaps on the Moon! This topic encourages students to
think about conditions that space travellers will meet, how
spacecraft will be powered, and the problems associated with space
travel including the maintenance of medical fitness.…read more

Page 6

Preview of page 6

Here's a taster:

The formation and evolution of the Universe and its stars.
Requirements for travelling in space and taking a holiday on
different planets.…read more

Page 7

Preview of page 7

Here's a taster:

You should be able to:
describe conditions in interplanetary space in terms of
atmosphere, temperature and weightlessness
explain how these conditions can be partly allowed for in
spacecraft, including supply of air, heating/cooling, artificial
gravity, exercise machines, etc
explain the difference between mass and weight
use the equation: weight = mass × gravitational field strength W
= mg
explain how a spacecraft might be propelled in terms of action
and reaction and understand the energy changes which take
place as a spacecraft is being launched…read more


No comments have yet been made

Similar Physics resources:

See all Physics resources »See all resources »