Atoms
Which particles make up the nucleus?
Protons and neutrons
What do waves transfer?
Energy
What is a force?
A push or pull acting upon an object.
What is the main source of energy for Earth?
The Sun.
How are elements arranged in the modern periodic table?
By increasing atomic number.
What is the charge of a proton?
Positive
What is the highest point of a transverse wave called?
The crest.
What is motion?
A change in an object's position over time.
What do you call energy that is stored?
Potential energy.
What are the vertical columns called?
Groups or Families.
What determines the type of element an atom is?
The number of protons.
What is the lowest point of a transverse wave called?
The trough.
What happens to an object when an unbalanced force acts on it?
Its motion changes (it speeds up, slows down, or changes direction).
What do you call energy of motion.
Kinetic energy.
Periods.
What is the mass number?
The total number of protons and neutrons in the nucleus.
What is the distance between two consecutive crests called?
Wavelength.
What force slows down moving objects?
Friction.
true or false Solar, wind, and hydropower are renewable resources?
true
Which element has the symbol 'H'?
Hydrogen.
Does an electron in an atom move at all?
Yes, electrons in an atom are in constant motion
The two main types of waves?
transverse waves and longitudinal waves.
What force pulls objects toward the center of the Earth?
Gravity.
true or false Coal, oil, and natural gas are nonrenewable energy sources?
true
What is the lightest element in the periodic table?
Hydrogen.