WorksheetsSemester 2 Review
Total questions: 22
Worksheet time: 12mins
According to Newton's Universal Law of Gravitation , why does force increases a lot when distance decreases a small amount?
Force is inversely related to the distance to the power of 2.
Force and distance have direct relationship.
When distance increases, the force will be affect less.
Because for is only related to the mass when distance is big.
How is the electrostatic force different from the force of gravity?
The force of gravity is always stronger than electrostatic force.
The electrostatic force is always stronger than the force of gravity.
The force of gravity only pulls while the electrostatic force can both push and pull.
The electrostatic force is not affected by gravity.
How do you make your electromagnet stronger? Check all that applies.
Wrap more coils around the nail.
Shake the battery faster.
Use a longer nail
Wrap the coils around the battery.
How do you make the lightbulb light up brighter on the shake electricity generator? Check all that applies.
Shake the generator faster.
Add more coils around the tube.
Add more batteries
Add stronger magnet
When electricity is generated, what is moving through the coil?
Electrons
Protons
Neutrons
Nucleus
How do magnets generate electricity?
Electricity flows in magnets.
Movements of magnets induce electrons in the coils to move to generate electricity.
The kinetic energy in magnets are transferred to the coils to generate electricity.
The potential energy in the magnets is transformed into heat, and heat generates electricity.
What is the upside of levitating transportation?
You get to use less fossil fuel because electricity does not use fossil fuels.
You can run the transportation by using permanent magnets.
Less energy is wasted due to reduced friction.
You do not need to walk to reach your destination.
Which part of an atom is positived charged, found in nucleus, and element identifier?
Proton
Electron
Neutron
Pretron
Which subatomic particles differentiate the charge of an atom?
Proton and Neutron
Proton and Electron
Electron and Neutron
Atomic mass and Neutron
What does the picture tell us about Carbon?
Number of electrons in the atom
Number of elctrons in the outer most shell
Number of proton
Number of electrons that will consume other atoms
Why do atoms make bond with other atoms?
To fill their outer shells and duplicate themselves
To fill their outer shells and achieve stability
To generate more energy
To reach the highest number of valence protons
Which intramolecular bond is formed between Iron and Aluminum?
Metallic
Covalent
Ionic
Constallation
Sodium (metal) atom is about to form a bond with Iodine (non-metal) atom. What is likely to happen during the bonding process?
They share valence electrons.
They will form covalent bond.
They are forming metallic bond.
Both atoms become ions and make bond.
What kind of intermolecular bond are water moleculars form?
Hydrogen Bonding
Dipole-Dipole
London Dispersion
Bohr Bonding
What kind of intermolecular bonding does the picture above explain?
Hydrogen Bonding
Dipole-Dipole
London Dispersion
Bohr Bonding
How do stars generate the tremendous amount of energy?
Hydrogens fuse to form helium and generate energy.
Helium and Hydrogen combine to generate Oxygen and burn the Oxygen.
It burns fossil fuel.
Oxygen is provided by planets around stars and generate energy.
What is good evidence to predict temperature, rate of burning fuel and the elements produced by the star?
Mass
Age of the Star
Electromagnetic waves
Color
Which of the following is not electromagnetic wave?
X-ray
Radio wave
Gamma Ray
Sound wave
How fast do the electromagnetic waves travel?
Speed of sound
Up to Mach 7
Speed of light
They all travel with different speed.
What is the end stage of a high mass star?
White Dwarf
Black Dwarf
Black Hole
Neutron Star
When the frequency of an electromagnetic wave increase, what happens to the energy of the wave?
Energy also increases.
Energy decreases.
Energy will not change because the speed of light does not change.
We do not have enough information to answer this qeustion.
Why is ionizing energy like energy from gamma rays damgerous to our body?
It magnetizes the human cells.
It can cause human body cells and tissue to be damaged.
It will alter brain function by ruining brain biorythim.
It will not damage our body. Non-ionizing energy will damage hour body instead.
