Prepare for the Praxis 5005 Elementary Science exam with these practice questions and answers. This covers life science, earth science, physical science, and scientific inquiry.
Q: lithosphere
Answer: made up of the crust and the upper mantle
Q: Order of the Earth’s atmosphere
Answer: TroposphereStratosphereMesosphereThermosphere
Q: Theory of Plate Tectonics
Answer: there are 8 majors plates and many small plates that move at a rate of 10 to 50 millimeters meters per year
Q: Creating coarse grained igneous rock
Answer: magma that cools slowly
Q: tectonic movement
Answer: main formation of mountains
Q: igneous rock
Answer: can be classified by the size of the crystals in the rock- formed when molton rocks materials cool
Q: metamorphic rocks
Answer: formed from other rocks heat and pressure
Q: sedimentary rocks
Answer: come from weathering
Q: igneous, metamorphic, sedimentary rocks are classified by
Answer: how the rocks were formed
Q: igneous
Answer: result of cooling molton rocks/magma
Q: sedimentary
Answer: rock particles are cemented together
Q: metamorphic
Answer: igneous rocks, sed rocks, meta rocks, that are transformed by heat and pressure
Q: absolute dating
Answer: the use of radioactivity to determine the age of rocks and fossils
Q: stratigraphy
Answer: the study of rock layers
Q: law of superposition
Answer: the oldest rocks in a unit are found on the bottom of the rock column
Q: nebulae
Answer: visible in the night sky and glowing cloud of dust, hydrogen, and plasma
Q: neutron starts
Answer: the remnants of supernovae
Q: pulsars
Answer: neutron starts that emit radio waves on a periodic basis
Q: quasars
Answer: distant galaxy that emits large amounts of visible light and radio waves
Q: perihelion
Answer: the point where the earth is the closest to the sun
Q: tides occur because
Answer: the force of gravity follows the inverse square law
Q: prokaryotes
Answer: do not have a nuclear membrane and the DNA is not packed into chromosomes
Q: mitochondria
Answer: organelles that produce power and are not in the smaller, simpler, cell
Q: ribosomes
Answer: sites where cells assemble proteins
Q: vacuoles
Answer: store food
Q: Golgi apparatus
Answer: sort molecules
Q: lysosomes
Answer: digestive enzymes
Q: endoplasmic reticulum
Answer: synthesizes proteins
Q: interphase
Answer: before mitosis begins
Q: prophase
Answer: beginning of mitosis
Q: metaphase
Answer: fibers attacked to chromosomes
Q: anaphase
Answer: chromosomes separate
Q: telophase
Answer: cells divide
Q: how many autosome are in somatic cells of human begins?
Answer: 44
Q: oogenesis
Answer: formation of eggs
Q: spermatogenesis
Answer: formation of sperm
Q: kingdoms
Answer: plants, animals, fungi, Protista, Achaea, bacteria
Q: predation
Answer: species kill other species
Q: mutualism
Answer: both species benefit
Q: commensalism
Answer: 1 species benefits without other being harmed
Q: parasitism
Answer: one species feeds off another species but doesn’t kill it immediately
Q: biochemists
Answer: deal with living objects
Q: adequate resource materials in science comes from
Answer: a variety of different sources and are written at different learning levels.
Q: colloids
Answer: are mixtures in which one substance is evenly dispersed in another
Q: radiation
Answer: the transfer of heat by electromagnetic waves
Q: 1st law of thermodynamics
Answer: energy is neither created nor destroyed
Q: heat capacity
Answer: how much the temperature of an object will increate when a quantity of heat is added to the object
Q: Saturn
Answer: 2nd largest planet
Q: Jupiter
Answer: largest planet- 6 moons-strong magnetic field- red spots
Q: Uranus
Answer: 3rd largest planet-gaseous planet
Q: Neptune
Answer: has 3 rings
Q: Pluto
Answer: dwarf planet
Q: Earth
Answer: 70% is covered by water
Q: Sun consist of
Answer: core, photosphere, chromosphere, corona
Q: core
Answer: inner portion of the sun- fusion takes place
Q: photosphere
Answer: surface of the sun
Q: chromosphere
Answer: hydrogen gas causing portion to be red
Q: corona
Answer: transparent of the sun visible only during a total eclipse
Q: magnitude
Answer: Astronomers measure the brightness of a star. Allows astronomers to rank how bright different stars appear to humans stars with negative ___ are the brightest of them all.
Q: white dwarf
Answer: the dying core of a giant star
Q: comets
Answer: masses of frozen gases, cosmic dust, and small rocky particles
Q: meteorites
Answer: strike the earth’s surface
Q: oort cloud
Answer: surrounds our solar system
Q: Kuiper belt
Answer: small bodies orbiting the sun beyond Neptune
Q: succession
Answer: orderly process of replacing a community that has been damage or has begun where no life previously existed
Q: matter
Answer: everything in our world is made up of it
Q: mass
Answer: measure of the amount of matter in an object
Q: kinetic friction
Answer: force of friction of 2 surfaces in contact with each other when there is relative motion between the surfaces.
Q: centripetal force
Answer: when an object moves in a circular path