WorksheetsTeori Fisika 19 November 2020
Total questions: 10
Worksheet time: 5mins
Which statement is correct?
Mass is a force, measured in kilograms.
Mass is a force, measured in newtons.
Weight is a force, measured in kilograms.
Weight is a force, measured in newtons.
What apparatus is needed to determine the density of a regularly-shaped block?
a balance and a ruler
a balance and a forcemeter (spring balance)
a measuring cylinder and a ruler
a measuring cylinder and a beaker
What causes refraction when light travels from air into glass?
The amplitude of the light waves changes.
The colour of the light changes.
The frequency of the light waves changes.
The speed of the light changes.
An atom of lithium contains three protons and three electrons. The nucleon number (mass number) of the atom is 7. How many neutrons are there in the atom?
3
4
7
10
Which types of radiation can be stopped by a sheet of paper?
alpha particles
beta particles
gamma rays
X rays
Which statement is correct about the speed of electromagnetic waves in a vacuum?
Ultraviolet waves have the greatest speed.
Visible light waves have the greatest speed.
Infrared waves have the greatest speed.
All electromagnetic waves have the same speed.
A student wishes to use a magnetising coil to make a permanent magnet from a piece of metal. Which metal should she use?
aluminium
copper
iron
steel
Which change will lower the pitch of a sound?
decreasing its amplitude
decreasing its frequency
increasing its amplitude
increasing its frequency
A 3.0 ohm lamp and a 6.0 ohm lamp are connected in series. What is the total resistance of the combination?
0.5 ohm
2.0 ohm
9.0 ohm
18.0 ohm
A large electric motor is used to lift a container off a ship. Which of the following values are enough to allow the power of the motor to be calculated?
the mass of the container and the distance moved
the force used and the distance moved
the current used and the work done
the work done and the time taken
