WorksheetsIGCSE Combined Science Unit 1
Total questions: 28
Worksheet time: 19mins
A ray of light hits a flat mirror with an angle of incidence of 23.2°. The angle of reflection is (a) degrees.
What is a normal line?
An imaginary line parallel to a surface
An imaginary line perpendicular to a surface
A real line parallel to a surface
A real line perpendicular to a surface
A Cardinal, a bird, sees itself in the flat mirror of a car. The cardinal is nine inches from the mirror. How far behind the mirror does its image appear?
(a)
Where must an object be compared with a thin converging lens to make the image appear larger and inverted?
Beyond 2F
2F
Between F and 2F
Closer than F
Where must an object be compared with a thin converging lens to make the image inverted but the same size as the object?
Beyond 2F
2F
Between F and 2F
Closer than F
Where must a magnifying lens be held to create larger, upright image compared to the object?
Beyond 2F
2F
Between F and 2F
Closer than F
What does an ammeter measure?
current
charge
power
voltage
What does a voltmeter measure?
potential difference
emf
current
resistance
What is flow of charge per unit time?
(a)
The flow of electrons
electricity
power
current
energy
A pencil sharpener is connected and gets 88.3 C of electric charge in 9.22 seconds. What is the current?
(a)
A phone is connected to a 22.5V outlet and has a current of 4.33 A. What is the energy transferred in 388 seconds?
(a)
A flashlight was measured to use 55.4 V while receiving 3.22 A. What is the resistance of the flashlight?
(a)
16.4 A flows through a pickle in a high school lab for 344 seconds. What is the charge passing though the pickle?
(a)
An LED string of lights runs on 9.443 V while requiring a maximum of 2.999 A. What is the power of the string of lights?
(a)
A child on its side rolls down a hill. What energy conversion is taking place?
PE converting to KE
KE converting to PE
A bird's nest is 3.54 m over a pond. The nest and its contents have a mass of 3.99 lbs. What is the PE?
(a)
A 2.4 lb hawk dives at 203 mph at a crow. What is the KE of the hawk?
(a)
Select the non-renewable resources.
coal
oil
natural gas
nuclear power
Select the renewable resources.
solar power
nuclear power
wind power
geothermal power
What energy transfer does not require matter?
radiation
convection
conduction
Name a good conductor of thermal energy.
metals
wood
cotton
styrofoam
Name 2 types of material bad conductors of thermal energy.
metals
ceramics
wood
spun fiberglass
Why are solids so good at conduction?
the particles are spaced out
the particles are always moving
the particle are so close together
the particles are so small
What is the main energy transfer in fluids?
conduction
convection
radiation
Why does hot air rise?
the coriolis effect
it is less dense
it is more dense
hot air rises
What color is the best at reflection of infra-red radiation?
black
white
teal
puce
What surface texture is the best at reflection of infra-red radiation?
dull
matte
shiny
flat
