Physis Paper 3 Flashcards by Miracle Ewaleifoh

Which of these is the best piece of equipment to produce the white light?

Ray block

How well did you know this?

Not at all

Perfectly

the electromagnetic spectrum used to detect broken bones is..

X-rays

How well did you know this?

Not at all

Perfectly

the electromagnetic spectrum used in thermal imaging is…

Infrared

How well did you know this?

Not at all

Perfectly

What is the 7 visible light

red, orange, yellow, green, blue, indigo, violet

How well did you know this?

Not at all

Perfectly

What are the 7 electromagnetic spectrum in order

radio , microwaves ,visible- light, ultraviolet, x‑rays gamma rays

How well did you know this?

Not at all

Perfectly

What’s a scaler and what unit does it measure it?

-Size or magnitude only
-measures in m/s (distance)

How well did you know this?

Not at all

Perfectly

What is vector and what unit does

-magnitude and direction
-measure in m/s
-acceleration

How well did you know this?

Not at all

Perfectly

What does the term displacement mean?

Distance but with direction

How well did you know this?

Not at all

Perfectly

What does the term friction mean?

When 2 object slide thought each other

How well did you know this?

Not at all

Perfectly

Give 2 example of a scaler quantities

Distance
Mass
Temperature
Height
Speed
Time

How well did you know this?

Not at all

Perfectly

Give 2 example of vector quantities

Weight
Displacement
Force
Velocity

How well did you know this?

Not at all

Perfectly

What does the term resultant force mean?

Multiple force acting on a object at once

How well did you know this?

Not at all

Perfectly

Waves with a long wavelength has a…

Short frequency and low energy

How well did you know this?

Not at all

Perfectly

Waves with a short wavelength has a…

A high frequency and high energy

How well did you know this?

Not at all

Perfectly

What are the uses of a short wavelength?

Cooking
Communication

How well did you know this?

Not at all

Perfectly

What is the relative mass of a 🫐proton🫐
and the relative charge?

Relative mass:-1
Relative charge:+1

How well did you know this?

Not at all

Perfectly

What is the relative mass of a 🫐neutron🫐
and the relative charge

Relative mass:-1
Relative charge:0

How well did you know this?

Not at all

Perfectly

What is the relative mass of a 🫐electron🫐
and the relative charge?

Relative mass: -1
Relative charge:1/1680

How well did you know this?

Not at all

Perfectly

What are the dangers of radioactivity?

Skin burns
Cause of cancer

How well did you know this?

Not at all

Perfectly

What are the dangers EM radiation?

Damage DNA
Damage cells

How well did you know this?

Not at all

Perfectly

What are the uses of a long wavelength?

Communication
Broadcasting television
Microwave

How well did you know this?

Not at all

Perfectly

What is the term renewable energy mean?

Energy which are able to quickly replenish themselves and can be use over and over again

How well did you know this?

Not at all

Perfectly

What is the term non-renewable energy mean?

Once sources are used up, they cannot be replaced/replalished

How well did you know this?

Not at all

Perfectly

Give two examples of a non-renewable

coal
natural gas
oil
nuclear energy

How well did you know this?

Not at all

Perfectly

The part of the electromagnetic spectrum that * is used to cook food AND * has a shorter wavelength than microwaves is

Infared

The part of the electromagnetic spectrum that * is used to sterilise medical equipment AND * has a shorter wavelength than x‑rays is

gamma rays

Describe how a student could determine the wave speed of the water wave?

time a crest/ripple/wavefront (1) OR use (wave speed =) distance (1) time OR Count number of crests

How do you calculate the wave speed of the sound wave.

(v =) f × λ (speed =) freq(uency) × wavelength

Which will be the next stage in the evolution of our Sun?

red giant

The core of a star with a much bigger mass than our Sun is most likely to end as a

black hole

State one of the conditions necessary for this nuclear fusion reaction to start

ANY OF THESE POINT (1 marker q) high temperature (1) high pressure (1) high (particle) density (1) high (particle) speed / KE

Describe what happens in this nuclear fusion reaction.

two) isotopes/nuclei/atoms(1) fusing (1)

State one way that radioactivity can be dangerous to humans.

One from: cell damage (1) cancer (1) radiation sickness / poisoning (1) mutation (1) chromosomal damage (1) DNA damage (1) skin damage (1) (named) organ damage (1) burns (1) releases ionising radiation (1)

Stars of similar mass to our Sun were formed from a cloud of gas and dust called a ............................................... Our Sun is a ............................................................... star.

called a..nebula is a...main sequence

State one piece of equipment that can be used to measure radioactivity.

Geiger (Muller) (tube/counter) ( prefer use this rather than GM) photographic film dosimeter

Alpha (α) radiation and ultraviolet (UV) radiation are ionising radiations. Give two other ionising radiations.

beta(minus) (1) beta + (1) x-rays (1) gamma/γ (1)

The Sun is at the centre of our Solar System. The planets orbit the Sun. Which planet is nearest to the Sun?

Mercury

The Moon orbits the Earth. Which of these describes the Moon?

natural satellite

Suggest two reasons why the gravitational field strength on the Moon is different from the gravitational field strength on the Earth.

Mass Radius or density

What's the unit for Newton

All electromagnetic waves can travel in a vacuum. Which of these is the same for all electromagnetic waves travelling in a vacuum?

Speed

State one way that x-rays are harmful to humans.

mutate DNA / cells kills cells/tissue

State one way that x-rays are useful to humans.

detect broken bone airport security radiotherapy

The electromagnetic waves that the fire mostly emits are .............................. waves. These waves transfer .......................................... energy to the hands.

are.. infrared trasfer.. themical

How many daughter nuclei are produced from the fission of one nucleus of uranium235 (U235)?

When a uranium235 (U235) nucleus splits, neutrons are also emitted. The neutrons may start a chain reaction. Describe what is meant by a chain reaction.

more neutrons are emitted (which are absorbed by uranium nuclei) (1) atoms splitting four or more nuclei (1)

Nuclear fusion is a nuclear reaction that takes place in the Sun. Describe what happens during a nuclear fusion reaction.

hydrogen nuclei/atoms join (1) helium is produced (1)

The cyclist then uses the brakes on the bicycle to stop. Explain what happens to the kinetic energy of the cyclist

the kinetic energy (store)/it decreases (to zero) (1) thermal energy (store) increases (1)

A car is travelling at 10m/s. The driver sees a danger and stops the car. The stopping distance for the car would be smaller if the car...

Travelling more slowly

Describe an experiment to find out how the stopping distance depends on the surface that stops the toy car.

use of speed = distance divided by (1) Time measurement of appropriate time use ruler/stop clock

State one way the student could increase the speed of the car as it reaches the flat surface.

push/pull the trolley (1) make the slope steeper(1)

*White light includes all the colours in the visible spectrum.* A beam of white light is the only light that shines on a book. The book appears green. A red filter is placed between the source of white light and the book. What colour does the book appear now?

Black

A clear image of a building can be seen on the surface of the ball. This clear image is an example of..

specular reflection

Explain why the surface of the metal ball gives a clear image

(the surface/metal ball) is smooth/shiny (1) angle of incidence is equal to the angle of reflection (1)

State one similarity and one difference in the way the rays of light pass through the lenses.

Similarity - (both) change direction refract (rays of light) Differences - one converges the other diverges (1)

State how the power of P is different from the power of Q

(the power of) P is less than (the power of) Q

The student has a stopwatch. Describe how the student could determine the frequency of the ripples on the lake.

(arriving/passing a point) in a specific time(1) count the number of waves(1)

Describe the difference between transverse waves and longitudinal waves.

transverse – (oscillations) perpendicular to direction of wave (travel) (1) longitudinal – (oscillations) in same direction as wave (travel) (1)

Alpha (α), beta (β) and gamma (γ) are three types of radioactive emissions. Which statement describes all of these radioactive emissions?

ionising and emitted by unstable nuclei

State the SI unit for the activity of a radioactive source.

becquerel accepts Bq

The beta source is then also taken away. The counter is reset to zero and switched on again. A new count is taken for 1 minute. Give a reason why there would now be a reading on the counter.

Background radiation

Describe the dangers of exposure to radioactive sources and what can be done to protect hospital staff when they are working with radioactive sources.

Dangers of exposing people to radioactive sources/radiation. * it is ionising * may cause cancer * may destroy /kill cells * can mutate DNA * can burn the skin Protection of hospital staff using radioactive sources/radiation. * use tongs to carry radioactive sources * use lead containers to store sources * stay at a distance from radioactive sources * use sources for as short a time as possible

Give 2 factors that can affect the reaction time

Tiredness Drugs Distraction Alcohol

Give a reason why a driver applied breaking distance?

Poor road Poor vehicle condition More mass is in the vehicle

What does the term electromagnetic wave mean?

Vibrations between an electric field and magnetic field.

What does all electromagnetic wave have?

Travels at the same speed transverse energy as radiation

Infrared are use for..

In-night vision camera

Gamma rays are used to..

to sterilise medical equipment

Ultraviolet wave are use for..

Detect forged bank note

X-ray are used to..

Detect brokens bone

Describe how the brightness changes with wavelength.

increases (at first) (1) reaches a peak (1) (then) decreases (1)

Formula for acceleration

a = velocity divided by time

Formula for kinetic energy

K.E. = 1/2 m v2

Physis Paper 3 Flashcards

(73 cards)