TEXES SCIENCE PRACTICE Test Exam
Questions and Answers Latest 2025 A+
Why use parallel circuitry?
If one resistor fails, the other resistors prevent the outlets from
becoming inoperable
Plane Mirrors
Virtual Images
Images are Reflected Left-to-Right
Same Distance and Size as Reality
What is the voltage across a circuit with 1, 3, and 2 resistors
and a 12 V source?
2V
Refraction
bending of a wave as it moves from one medium into another
medium.
Projectile motion without air resistance is an example of
motion with constant...
acceleration
You are pushing a lawn mower with 60 N of force at a 30
degree angle from the horizontal. What are the vertical and
horizontal components of this force?
Vertical -- 30 N
Horizontal -- 52 N
Lunar Eclipse
Also known as a full moon
The earth is in the center
High tide will be lower than usual
Low tide will be lower than usual
Solar Eclipse
,Also known as a new moon
The moon is in the center
High tide will be higher than usual
Low tide will be higher than usual
Astronomical Unit (AU)
1.5 billion meters
Distance from Earth and Sun
Planetary Axis
Both the Earth and Moon have a planetary axis
The earth's planetary axis dictates our 24 hour day
Tides are influenced by...
both the sun and the moon
Spring tides are highest (full moon and new moon)
Neap tids are lowest (first quarter moon and last quarter moon)
Planets in order
Terrestrial - Mercury, Venus, Earth, Mars
Gas Giants - Jupiter, Saturn, Uranus, Neptune
Life Cycle of Stars
1.) Interstellar Nebula - dust and hydrogen start to come together
2.) Protostart - dust and hydrogen start coming together through
fussion
3.) Main Sequence Star - a stable stage of a star's life cycle (our
sun is currently in this stage)
4.) Red Giant - Where the hydrogen diminishes and the helium
, becomes more prevalent
HIGH MASS -- SHORTER LIFE
5.) Supernova explosion
A.) If 1.4-3 times the size of our sun, it becomes a Neutron Star
B.) If over 3 times the size of our sun, it becomes a black hole
LOW MASS -- LONGER LIFE
5.) White Dwarf -- cools to produce carbon and implodes
6.) Black Dwarf
Pluto is classified as a dwarf planet because...
there are other objects orbiting the sun with a similar mass that
are classified as dwarf planets
What are the most and least valuable objects to recycle?
Most -- Aluminum
Least -- Glass & Newspaper
Formation of Coal
Where organic materials are covered by sediment on land (in a
swamp)
Formation of Petroleum
Where microorganisms are covered with sediment underwater
(lake or ocean)
Top Environmental Concern with Abandoned Mines
The pollution of groundwater and soil
Phospholipids
A lipid that penetrates simple cell membranes (eukaryotes) to
allow the transport of material in and out of the cell.
One side of the lipid is hydrophobic and the other is hydrophilic.
Questions and Answers Latest 2025 A+
Why use parallel circuitry?
If one resistor fails, the other resistors prevent the outlets from
becoming inoperable
Plane Mirrors
Virtual Images
Images are Reflected Left-to-Right
Same Distance and Size as Reality
What is the voltage across a circuit with 1, 3, and 2 resistors
and a 12 V source?
2V
Refraction
bending of a wave as it moves from one medium into another
medium.
Projectile motion without air resistance is an example of
motion with constant...
acceleration
You are pushing a lawn mower with 60 N of force at a 30
degree angle from the horizontal. What are the vertical and
horizontal components of this force?
Vertical -- 30 N
Horizontal -- 52 N
Lunar Eclipse
Also known as a full moon
The earth is in the center
High tide will be lower than usual
Low tide will be lower than usual
Solar Eclipse
,Also known as a new moon
The moon is in the center
High tide will be higher than usual
Low tide will be higher than usual
Astronomical Unit (AU)
1.5 billion meters
Distance from Earth and Sun
Planetary Axis
Both the Earth and Moon have a planetary axis
The earth's planetary axis dictates our 24 hour day
Tides are influenced by...
both the sun and the moon
Spring tides are highest (full moon and new moon)
Neap tids are lowest (first quarter moon and last quarter moon)
Planets in order
Terrestrial - Mercury, Venus, Earth, Mars
Gas Giants - Jupiter, Saturn, Uranus, Neptune
Life Cycle of Stars
1.) Interstellar Nebula - dust and hydrogen start to come together
2.) Protostart - dust and hydrogen start coming together through
fussion
3.) Main Sequence Star - a stable stage of a star's life cycle (our
sun is currently in this stage)
4.) Red Giant - Where the hydrogen diminishes and the helium
, becomes more prevalent
HIGH MASS -- SHORTER LIFE
5.) Supernova explosion
A.) If 1.4-3 times the size of our sun, it becomes a Neutron Star
B.) If over 3 times the size of our sun, it becomes a black hole
LOW MASS -- LONGER LIFE
5.) White Dwarf -- cools to produce carbon and implodes
6.) Black Dwarf
Pluto is classified as a dwarf planet because...
there are other objects orbiting the sun with a similar mass that
are classified as dwarf planets
What are the most and least valuable objects to recycle?
Most -- Aluminum
Least -- Glass & Newspaper
Formation of Coal
Where organic materials are covered by sediment on land (in a
swamp)
Formation of Petroleum
Where microorganisms are covered with sediment underwater
(lake or ocean)
Top Environmental Concern with Abandoned Mines
The pollution of groundwater and soil
Phospholipids
A lipid that penetrates simple cell membranes (eukaryotes) to
allow the transport of material in and out of the cell.
One side of the lipid is hydrophobic and the other is hydrophilic.
