Praxis Elementary Education: Science
Subtest (5005) Exam Questions and
Answers
4 phases of the water cycle - ANS-condensation, precipitation, collection, evaporation
A molecule is made up of - ANS-1 or more elements
A section of DNA is known as a... - ANS-gene
aerosol - ANS-An aerosol is a suspension of fine solid particles or liquid droplets in air
or another gas. Aerosols can be generated from natural or human causes. The term
aerosol commonly refers to the mixture of particulates in air, and not to the particulate
matter alone. Examples of natural aerosols are fog, mist or dust
angular velocity - ANS-The angular velocity of an object with respect to a point is a
measure of how fast that object moves through the point's view, in the sense of how fast
the angular position of the object changes. The units of angular velocity are that of
inverse time.
basic unit of life - ANS-cell
biodiversity - ANS-Biodiversity — short for biological diversity — is the variety of all
living things and their interactions. Biodiversity changes over time as extinction occurs
and new species evolve. Scientists often speak of three levels of diversity: species,
genetic, and ecosystem diversity.
Chromosomes are... - ANS-Single pieces of coiled DNA that appear during cell division.
Chromosomes are made up of DNA and proteins called chromatin, which helps
compact the DNA so it can fit in the cell nucleus.
Chromosomes can contain hundreds to thousands of... - ANS-genes!
circular motion - ANS-In physics, circular motion is a movement of an object along the
circumference of a circle or rotation along a circular arc. It can be uniform, with a
constant rate of rotation and constant tangential speed, or non-uniform with a changing
rate of rotation
Condensation definition? - ANS-The change of state from a gas to a liquid
, covalent bond - ANS-covalent bond, in chemistry, the interatomic linkage that results
from the sharing of an electron pair between two atoms. The binding arises from the
electrostatic attraction of their nuclei for the same electrons.
Five examples of covalent bonds are hydrogen (H₂), oxygen (O₂), nitrogen (N₂), water
(H₂O), and methane(CH₄)
covalent compounds - ANS-A covalent compound is a molecule made up of two or
more atoms that are connected by covalent bonds. Covalent bonds are formed when
atoms share one or more pairs of valence electrons. The atoms are held together by the
strong electrostatic forces between the shared electrons and the nuclei of the atoms
cytokinesis - ANS-Cytokinesis is the final step of cell division, where the cytoplasm of a
single cell is physically separated into two daughter cells. It's a key part of mitosis and
meiosis, which are types of nuclear division that occur in animal cells. Cytokinesis
begins during anaphase, a phase of nuclear division, and continues through telophase
Cytokinesis - ANS-The phase in the cell cycle that separates the cytoplasm forming 2
new cells
DNA (Deoxyribonucleic acid) is made up of 4 different bases: - ANS-Adenine (A)
Cytosine (C)
Guanine (G)
Thymine (T)
DNA is shaped like a... - ANS-double helix (twisted ladder)
does the moon or the sun affect the tides - ANS-The moon is a major influence on the
Earth's tides, but the sun also generates considerable tidal forces. Solar tides are about
half as large as lunar tides and are expressed as a variation of lunar tidal patterns, not
as a separate set of tides.
earth's layers from the outside, in - ANS-crust 50-70km
upper mantle 640km
lower mantle 2240km
outer core 2260km
inner core 1220km
*numbers refer to radial thickness of each layer in km
ecological diversity - ANS-Ecological diversity refers to the diverse array of ecosystems
being seen in a huge geographical location. India for example, has deserts, tropical
rainforests, mangroves, wetlands, coral reefs, estuaries and several other types of
ecosystems.
Subtest (5005) Exam Questions and
Answers
4 phases of the water cycle - ANS-condensation, precipitation, collection, evaporation
A molecule is made up of - ANS-1 or more elements
A section of DNA is known as a... - ANS-gene
aerosol - ANS-An aerosol is a suspension of fine solid particles or liquid droplets in air
or another gas. Aerosols can be generated from natural or human causes. The term
aerosol commonly refers to the mixture of particulates in air, and not to the particulate
matter alone. Examples of natural aerosols are fog, mist or dust
angular velocity - ANS-The angular velocity of an object with respect to a point is a
measure of how fast that object moves through the point's view, in the sense of how fast
the angular position of the object changes. The units of angular velocity are that of
inverse time.
basic unit of life - ANS-cell
biodiversity - ANS-Biodiversity — short for biological diversity — is the variety of all
living things and their interactions. Biodiversity changes over time as extinction occurs
and new species evolve. Scientists often speak of three levels of diversity: species,
genetic, and ecosystem diversity.
Chromosomes are... - ANS-Single pieces of coiled DNA that appear during cell division.
Chromosomes are made up of DNA and proteins called chromatin, which helps
compact the DNA so it can fit in the cell nucleus.
Chromosomes can contain hundreds to thousands of... - ANS-genes!
circular motion - ANS-In physics, circular motion is a movement of an object along the
circumference of a circle or rotation along a circular arc. It can be uniform, with a
constant rate of rotation and constant tangential speed, or non-uniform with a changing
rate of rotation
Condensation definition? - ANS-The change of state from a gas to a liquid
, covalent bond - ANS-covalent bond, in chemistry, the interatomic linkage that results
from the sharing of an electron pair between two atoms. The binding arises from the
electrostatic attraction of their nuclei for the same electrons.
Five examples of covalent bonds are hydrogen (H₂), oxygen (O₂), nitrogen (N₂), water
(H₂O), and methane(CH₄)
covalent compounds - ANS-A covalent compound is a molecule made up of two or
more atoms that are connected by covalent bonds. Covalent bonds are formed when
atoms share one or more pairs of valence electrons. The atoms are held together by the
strong electrostatic forces between the shared electrons and the nuclei of the atoms
cytokinesis - ANS-Cytokinesis is the final step of cell division, where the cytoplasm of a
single cell is physically separated into two daughter cells. It's a key part of mitosis and
meiosis, which are types of nuclear division that occur in animal cells. Cytokinesis
begins during anaphase, a phase of nuclear division, and continues through telophase
Cytokinesis - ANS-The phase in the cell cycle that separates the cytoplasm forming 2
new cells
DNA (Deoxyribonucleic acid) is made up of 4 different bases: - ANS-Adenine (A)
Cytosine (C)
Guanine (G)
Thymine (T)
DNA is shaped like a... - ANS-double helix (twisted ladder)
does the moon or the sun affect the tides - ANS-The moon is a major influence on the
Earth's tides, but the sun also generates considerable tidal forces. Solar tides are about
half as large as lunar tides and are expressed as a variation of lunar tidal patterns, not
as a separate set of tides.
earth's layers from the outside, in - ANS-crust 50-70km
upper mantle 640km
lower mantle 2240km
outer core 2260km
inner core 1220km
*numbers refer to radial thickness of each layer in km
ecological diversity - ANS-Ecological diversity refers to the diverse array of ecosystems
being seen in a huge geographical location. India for example, has deserts, tropical
rainforests, mangroves, wetlands, coral reefs, estuaries and several other types of
ecosystems.
