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WorksheetsOrigin and Formation of the Universe
Total questions: 55
Worksheet time: 28mins
Which branch of science studies the origin, evolution, and fate of the universe?
Astronomy
Astrophysics
Cosmology
Geology
What term describes the large expanse containing stars, gas, planets, and galaxies?
Cosmos
Universe
Solar System
Galaxy
The theory stating the universe originated from a hot, dense singularity 13.8 billion years ago is the:
Big Crunch Theory
Big Bang Theory
Oscillating Universe Theory
Steady State Theory
Which theory, proposed by Fred Hoyle, suggests the universe is expanding but density remains constant?
Creationism Theory
Oscillating Universe Theory
Steady State Theory
Big Bang Theory
The Oscillating Universe Theory was proposed by:
Richard Tolman
Edwin Hubble
Fred Hoyle
Robert Wilson
The belief that the universe was created by a Supreme Being is called:
Cosmology
Creationism Theory
Intelligent Design Theory
Steady State Theory
The redshift observed by Edwin Hubble indicates that:
Galaxies are moving toward us
Light shifts to longer wavelengths
The universe is shrinking
Stars are cooling rapidly
The constant proportion of hydrogen (74%) and helium (24%) in the universe supports:
Cosmic Inflation Theory
Big Bang Theory
Steady State Theory
Stellar Evolution Theory
The remnant heat from the early universe detected by Penzias and Wilson is called:
Solar Radiation
Cosmic Microwave Background Radiation
Infrared Radiation
Stellar Radiation
The process in the Big Bang that formed hydrogen, helium, and lithium is called:
Stellar Nucleosynthesis
Big Bang Nucleosynthesis
Supernova Nucleosynthesis
Alpha Process
Nuclear reactions inside stars that form new elements are known as:
Stellar Nucleosynthesis
Big Bang Nucleosynthesis
Nuclear Fission
Nuclear Decay
The balance between gravity and fusion pressure in stars is called:
Stellar Equilibrium
Hydrostatic Equilibrium
Gravitational Collapse
Radiative Balance
The step-by-step addition of alpha particles to form heavier nuclei is the:
Proton-Proton Chain
Chain of Alpha Processes
CNO Cycle
Neutron Capture
Which nucleosynthesis occurs during a supernova explosion?
Big Bang Nucleosynthesis
Supernova Nucleosynthesis
Stellar Nucleosynthesis
Alpha Process
A star spends most of its life in which stage?
Main Sequence Star
Red Giant
White Dwarf
Supernova
The dense remnant left after a massive star’s supernova is called a:
White Dwarf
Neutron Star
Black Hole
Brown Dwarf
The faint remnant left after a medium-mass star expels its outer layers is a:
Neutron Star
White Dwarf
Black Hole
Pulsar
The formation of atomic nuclei from protons and neutrons is called:
Nucleosynthesis
Recombination
Ionization
Fusion
The point when neutral atoms formed and light traveled freely is called:
Ionization
Recombination
Nucleosynthesis
Cosmic Cooling
According to the Big Bang Theory, the universe is about:
4.6 billion years old
10 billion years old
13.8 billion years old
15 billion years old
The smallest unit of an element is the:
Atom
Molecule
Ion
Nucleus
The negatively charged subatomic particle is the:
Proton
Neutron
Electron
Positron
The positively charged subatomic particle is the:
Proton
Electron
Neutron
Positron
Subatomic particles with no charge are:
Neutrons
Protons
Electrons
Ions
Particles found in the nucleus are called:
Ions
Nucleons
Electrons
Neutrinos
A combination of two or more atoms held together by chemical bonds is a:
Atom
Molecule
Compound
Ion
The force that holds atoms together is the:
Nuclear force
Chemical bond
Gravitational force
Electromagnetic force
Bond resulting from electron transfer:
Covalent bond
Ionic bond
Metallic bond
Hydrogen bond
Bond formed by electron sharing:
Ionic bond
Covalent bond
Metallic bond
Hydrogen bond
Bond in metals where electrons move freely:
Metallic bond
Ionic bond
Polar bond
Covalent bond
Equal electron sharing occurs in a:
Polar covalent bond
Nonpolar covalent bond
Ionic bond
Metallic bond
Unequal electron sharing occurs in a:
Nonpolar covalent bond
Polar covalent bond
Ionic bond
Hydrogen bond
The ability of an atom to attract electrons is:
Electronegativity
Ionization energy
Atomic radius
Electron affinity
A molecule with two opposite poles is called a:
Ion
Dipole
Isotope
Radical
The Greek letter delta (δ) represents:
Partial charge
Full charge
Neutral charge
Ionization
The diagram showing valence electrons is the:
Lewis dot structure
Bohr model
Electron cloud model
Periodic table
The rule that atoms aim for 8 electrons in their outer shell is the:
Octet rule
Duet rule
Triple rule
Stability rule
A single bond has how many shared electrons?
2
4
6
8
A double bond has:
2 electrons
4 electrons
6 electrons
8 electrons
A triple bond has:
2 electrons
4 electrons
6 electrons
8 electrons
Polar molecules dissolve in:
Nonpolar solvents
Polar solvents
Both
Neither
Nonpolar molecules dissolve in:
Polar solvents
Nonpolar solvents
Both
Neither
Two people pulling a rope equally is an analogy of a:
Polar bond
Nonpolar bond
Ionic bond
Metallic bond
When dipole moments cancel, the molecule is:
Polar
Nonpolar
Ionic
Metallic
A molecule with one lone pair and three bonds, like NH₃, is:
Water
Ammonia
Methane
Carbon dioxide
If the electronegativity difference is > 0.4, the bond is:
Nonpolar
Polar
Ionic
Metallic
Forces between molecules are:
Intramolecular forces
Intermolecular forces
Nuclear forces
Ionic bonds
Forces holding atoms inside a molecule are:
Intramolecular forces
Intermolecular forces
Magnetic forces
Ionic bonds
The force between ions and polar molecules is:
Ion-dipole interaction
Dipole-dipole interaction
Hydrogen bond
London dispersion
The strongest dipole-dipole force is the:
Ion-dipole
Hydrogen bond
London dispersion
Metallic bond
The weakest intermolecular force is the:
Hydrogen bond
London dispersion force
Ion-dipole
Dipole-dipole
The force present in all molecules is:
Hydrogen bond
London dispersion force
Dipole-dipole
Ion-dipole
The high boiling point of water is due to:
London dispersion forces
Hydrogen bonding
Dipole-dipole interaction
Ion-dipole interaction
Dipole-dipole interaction occurs between:
Nonpolar molecules
Polar molecules
Ions
Metals
Temporary induced dipoles form which force?
London dispersion
Dipole-dipole
Hydrogen bond
Ion-dipole
