1-100 year 10 questions i didnt get correctly

Question 1

What is dissipated energy?

Answer 1

Energy lost to the surroundings/environment

Question 2

what is the equation for efficiency?

Answer 2

efficiency = energy transferred usefully/total energy input

Question 3

What is infared light?

Answer 3

Part of the electromagentic spectrum that has a wave length longer than visible light

Question 4

Name two types of thermal insulation in the home?

Answer 4

Double glazing, loft insulation

Question 5

What is specific heat capacity measured in?

Answer 5

J/Kg degrees celsius

Question 6

What is the equation linking energy mass SHC and temp change?

Answer 6

energy = mass x SHC x temp change

Question 7

The advantages of using oil and coal as an energy source?

Answer 7

reliable

Question 8

What is carbon capture and storage?

Answer 8

capturing carbon before its emitted and store underground

Question 9

Advantage of biofuels?

Answer 9

store underground, reknewable

Question 10

Advantage of nuclear power?

Answer 10

energy dense, doesnt produce polluting gas

Question 11

Disadvantage of nuclear power?

Answer 11

Toxic waste produced, radioactive waste hard to store

Question 12

Disadvantage of geothermal energy?

Answer 12

Only available in specific areas

Question 13

Examples of transverse waves?

Answer 13

Light and s waves

Question 14

What is an ionizing wave

Answer 14

Ionizing radiation is any type of particle or electromagnetic wave that carries enough energy to ionize or remove electrons from an atom

Question 15

What is frequency measured in

Answer 15

Hz hurtz

Question 16

What is the equation for wave frequency

Answer 16

wavelength/time period

Question 17

What can infared light be used for

Answer 17

tv remotes and heating

Question 18

What can visible light be used for

Answer 18

vision and optical cables

Question 19

What can gamma rays be used for

Answer 19

sterilzation and radiotherapy (medical treatments)

Question 20

Name 3 ionizing waves

Answer 20

Ultra violet, gamma, xray

Question 21

How can radio waves be produced

Answer 21

oscillations in electric circuits

Question 22

Where do gamma rays originate from

Answer 22

charges in nucleus of atoms

Question 23

equation for the magnification of a lens

Answer 23

image height/actual height

Question 24

what is the focal length

Answer 24

distance from lens to the principle focus

Question 25

What is a real image

Answer 25

one that can be shown on a screen

Question 26

whats a virtual image

Answer 26

one that does not exist only appears

Question 27

what type of image does a convex lens produce

Answer 27

virtual or real

Question 28

What type of image does a concave lens produce

Answer 28

virtual

Question 29

What is the term for reflection off a smooth surface

Answer 29

specular reflection

Question 30

term for reflection off a rough surface

Answer 30

diffuse reflection

Question 31

how do colour filters work

Answer 31

absorb certain wave lengths (and colour) and transmitting other wavelengths (and colours)

Question 32

What is the measurement of gravity on earth

Answer 32

9.81 N/kg

Question 33

Weight equation

Answer 33

weight = mass x gravity

Question 34

Work done equation

Answer 34

work done = force x distance

Question 35

What is hookes law

Answer 35

the extension of a spring is directly proportional to the force applied to it

Question 36

hookes law equation

Answer 36

force = spring constant x extension

Question 37

What is terminal velocity

Answer 37

The max speed at which an object falls (downward force)

Question 38

WHat is the pressure equation

Answer 38

pressure = force / area

Question 39

What is newtons first law

Answer 39

an object that is at rest = at rest an object that is in motion = stays in motion with the same speed and in the same direction unless acted upon by an unbalenced force

Question 40

Whats newtons second law

Answer 40

acceleration of an object is proportional to the resultant force acting on the object and inversely proportinal to the mass of object

Question 41

whats newtons third law

Answer 41

when 2 objects interact the forces they exert on one another are equal and oppisite

Question 42

What are the units used to measure acceleration

Answer 42

m/s squared

Question 43

What is the equation for acceleration

Answer 43

acceleration = change in speed/time

Question 44

pressure of a liquid equation

Answer 44

pressure = height of column x density liquid x GFS

Question 45

What is the equation for force

Answer 45

force = mass x acceleration

Question 46

What makes up the stopping distance of a veichle

Answer 46

thinking distance and braking distance

Question 47

What is the momentum equation

Answer 47

momentum = mass x velocity

Question 48

equation for calculating the size of a moment if a force

Answer 48

moment = force x perpendicular distance from pivot