Fichas
Physics
Fichas del conjunto (70)
- 1What are vector quantities?A physical quantity that has a size and a direction.
- 2What is a Scalar quatity?A physical quantity that only hs a size but not a diretion.
- 3Is distance Scalar or Vector?Scalar
- 4Is velocity Scalar or Vector?Vector
- 5What is the equation that involves speed, distance and time?speed= distance/ time
- 6Typical speeds of transport method: 1)Walking- 2)Running- 3)Cycling- 4)Cars- 5)Aeroplane-1)Walking- 1.4km/h
2)Running- 11km/h
3)Cycling-20km/h
4)Cars- 13m/s
5)Aeroplane- 250m/s - 7Formula for finding acceleration
- 8Example: A car is travelling at 15m/s when it collides with a tree and comes to a stop. Estimate the deceleration of the car.a=(v-u)÷t
=(0-15)÷1
=-15m/s² - 9The equation for uniform accelerationv² - u² = 2 x a x X
X= Distance - 10What is the equation for calculating gradient in a Distance/Time graph?Change in the vertical ÷ Change in the horizotal
- 11What is Newton's First Law?A resultant force is needed to make something start moving, speed up or slow down.
- 12What is the equation involvoing resultant force, mass and acceleration?F = m x a
F= Resultant Force (N)
m= Mass (kg)
a= Acceleration (m/s²) - 13What is the definition of mass?Mass is a measure of how much stuff is in an object.
- 14Is mass a scalar or vector quantity and what are its units?Mass is a scalar quantity and is measured in kilograms.
- 15What is the equation that involves weight mass and gravitational field strength?
- 16What is momentum?Momentum is the product of an objects mass and velocity.
- 17What is the equation for momentum?
- 18Example: A 50 kg cheetah is running at 60m/s. Calculate its momentum.p = m x v = 50 x 60
=3000 km m/s - 19Whats thinking distance?The thinking distance is the distance travelled in between the driver realising he needs to brake and actually braking.
- 20what is braking distance ?The braking distance is the distance taken to stop once the brakes are applied.
- 21Ruler drop testPerson A holds out their hand with a gap between their thumb and first finger.
Person B holds the ruler with the zero at the top of person A's thumb
Person B drops the ruler without telling Person A and they must catch it.
The number level with the top of person A's thumb is recorded in a suitable table. - 22Factors that might increase thinking distanceThinking distance can be increased by:
greater speed
tiredness
alcohol and drugs
distractions - 23Factors that might increase thinking distanceBraking distance can be increased by:
greater speed
poor road conditions (icy, wet)
car conditions (bald tyres, poor brakes, full of people) - 24What are the 8 energy stores?Kinetic
Thermal
Chemical
Gravitational potential
Elastic potential
Electrostatic
Magnetic
Nuclear - 25When an object is moving what kind of energy is it using?Kinetic energy
- 26What is the equation for kinetic energy?
- 27What is the useful and wasted energy in a kettle?USEFUL: heat
WASTED: Light
Sound - 28What is the equation for efficiency?
- 29What diagram is used to show efficiency?Sankey diagrams
- 30If the particles of the medium are vibrating to and fro in the same direction of energy transport, then the wave is a ____ wave.longitudinal
- 31When the particles of a medium are vibrating at right angles to the direction of energy transport, then the wave is a ____ wave.transverse
- 32What is the amplitude of the wave in the diagram below?0.03 m
- 33The number of cycles of a periodic wave occurring per unit time is defined as a wave's ___ _.frequency
- 34What is the equation that relates wave speed, wavelength and frequency?
- 35What is the minimum frequency of an ultrasound?200000 Hz
- 36What is one use of ultrasound?To produce a video image of the foetus
- 37What is the maximum frequency lower than 20Hz?Infrasound
- 38What can infrasounds detect?Seismic waves
- 39What is the law of reflection?Angle of incidence = Angle of Reflection
- 40What are the visible light colours?Red, Orange, Yellow, Green, Blue, Indigo, Violet
(ROY G BIV) - 41What type of lens is a concave lens? Convergent/ DivergentDivergent
- 42What type of lens is a convex lens? Convergent/ DivergentConvergent
- 43What is the order if the Electromagnetic spectrum starting from the longest wavelength?Radio, Microwaves, Infrared, Visible light, Ultra Violet, X-rays, Gamma rays
- 44Which EM wave has the hightest frequency?Gamma Ray
- 45Which EM wave has the most energy?Gamma Ray
- 46What types of waves are the EM spectrum waves?Transverse waves
- 47Everything you know about the current model of the atom. ( include charge and mass)Particle mass charge
Proton 1 +1
Neutron 1 0
Electron 1/1836 –1
- 48Alpha decayWhen an alpha particle is emitted from a nucleus the nucleus loses two protons and two neutrons. This means the atomic mass number decreases by 4 and the atomic number decreases by 2.
- 49Beta DecayIn Beta (β-) decay, a neutron changes into a proton plus an electron. The proton stays in the nucleus and the electron leaves the atom with high energy, and we call it a beta particle.
- 50Properties of alpha, beta and gamma decay
- 51isotope definitionIsotopes are the atoms of an element with different numbers of neutrons. They have the same proton number, but different mass numbers.
- 52Half-Life definitionIsotopes are the atoms of an element with different numbers of neutrons. They have the same proton number, but different mass numbers.
- 53What is background radiation?Background radiation is all around us. Some of it comes from natural sources and some comes from artificial sources.
- 54Give an example of what Alpha Radiation can be used forHousehold fire alarms
- 55Give an example of what Beta Radiation can be used forThickness of Paper
- 56Give an example of what Gamma Radiation can be used forSterilising food and medical equipment
- 57What is Nuclear Fission?Nuclear Fission is a type of nuclear reaction that is used to release energy from uranium atoms. Fission is another word for spliting. Uranium is mainky used because it has a large nuclei so can easily split when hit by a neutron.
- 58What is Nuclear Fusion?Nuclear Fusion involves 2 atomic nuclei joining to make a large nucleus
- 59What is the equation for Work Done?
- 60What is the equation for Power?
- 61What is moments?A moment is a turning effect of a force
- 62What is the formula for moments?
- 63What is current?The rate of flow of charge
- 64What is the formula for charge?
- 65Name all the circuit symbols without looking.:)
- 66what is potential difference?The energy transferred per coulomb of charge
- 67What is the equation for energy transffered?
- 68What is the equation for potential difference?
- 69Difference between parellel and series circuits.In a series circuit, the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component. In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.
- 70What is the equation for density?
Información
- Descripción
- Physics Topics - motion forces and conservation of energy - Waves and the Electromagnetic Spectrum - Radioactivity and Astronomy - Forces and Energy - Electricity and Circuits
- Creado por
- Dayo Odunowo
- Visitas
- 43
- Valoración