SCIENCE Flashcards
What is the primary function of hemoglobin?
Transporting oxygen in the blood
Hemoglobin is a protein in red blood cells that binds oxygen for delivery to tissues.
What type of organism does not have a backbone?
Jellyfish
Jellyfish are invertebrates that lack a skeletal structure.
What natural phenomenon is produced by heat and can create a breeze?
Clouds
Clouds form when water vapor condenses into droplets due to cooling, which can occur with heat changes.
What is the process called when minerals and crystals form?
Crystalization
Crystalization occurs when minerals solidify from a solution or melt.
What is the significance of a pH level less than 7?
Indicates acidity
A pH level below 7 signifies that a solution is acidic.
What two parts of a plant are essential for growth and survival?
Root & Stem
Roots anchor the plant and absorb nutrients, while stems provide support and transport nutrients.
What is formed when a base reacts with H+?
Cation
A cation is a positively charged ion that forms when a base accepts protons.
What are the three layers of the lithosphere?
Upper mantle, crust
The lithosphere includes the upper mantle and the crust, which are crucial for tectonic activity.
What process occurs when moisture inside a car evaporates?
Evaporation
Evaporation is the process where liquid turns into vapor, often accelerated by heat.
What is the chemical element represented by the symbol ‘C’?
Carbon
Carbon is essential for life and is a key component of organic molecules.
What process do producers use to create food?
Photosynthesis
Photosynthesis converts light energy into chemical energy in plants, algae, and some bacteria.
What is the neutron notation for an atom with 20 protons and 20 neutrons?
40/20
The notation indicates the atomic mass (40) and atomic number (20) of the element.
What instrument measures seismic activity?
Seismograph
A seismograph detects and records the intensity of seismic waves during earthquakes.
What are seismic waves?
Elastic waves generated by impulses
Seismic waves are produced by earthquakes or explosions and travel through the Earth.
What is the chemical formula for water?
H2O
True or False: The nucleus of an atom contains protons and neutrons.
True
Fill in the blank: The process by which plants convert sunlight into energy is called _____.
photosynthesis
Which planet is known as the Red Planet?
Mars
What is the powerhouse of the cell?
Mitochondria
Multiple Choice: Which of the following is a noble gas? A) Oxygen B) Helium C) Nitrogen
B) Helium
What is the primary gas found in the Earth’s atmosphere?
Nitrogen
True or False: The speed of light is approximately 300,000 kilometers per second.
True
What is the term for the variable that is manipulated in an experiment?
Independent variable
Fill in the blank: The basic unit of life is the _____.
cell
Which organ is responsible for pumping blood throughout the body?
Heart
Multiple Choice: What is the most abundant element in the universe? A) Oxygen B) Hydrogen C) Carbon
B) Hydrogen
What is the law of conservation of mass?
Mass is neither created nor destroyed in a chemical reaction.
True or False: DNA stands for Deoxyribonucleic Acid.
True
What type of bond involves the sharing of electron pairs between atoms?
Covalent bond
Fill in the blank: The _____ is the smallest particle of an element that retains its chemical properties.
atom
Which scientist is known for the theory of evolution by natural selection?
Charles Darwin
Multiple Choice: Which of the following is a type of renewable energy? A) Coal B) Solar C) Natural Gas
B) Solar
What is the function of red blood cells?
To carry oxygen throughout the body.
True or False: The Earth orbits the Sun in an elliptical shape.
True
What is the primary component of the Earth’s crust?
Silicate minerals
Fill in the blank: The scientific method typically begins with a _____ or observation.
question
What are the three states of matter?
Solid, liquid, gas
Multiple Choice: Which of the following is a greenhouse gas? A) Oxygen B) Carbon Dioxide C) Nitrogen
B) Carbon Dioxide
What is the acceleration due to gravity on Earth?
9.81 m/s²
True or False: The pH scale measures the acidity or alkalinity of a solution.
True
What is the process of converting a liquid to a gas called?
Evaporation
Copernican theory
Sun is the center of the solar system and the heavenly bodies around it
What is the largest division of time in geological scale?
A. Eon
B. Era
C. Epoch
D. Period
E. Age
A. Eon
Scientist says that som low mountains today were once more than 4x higher
Cuz diff layers of soil found beneath the mountains
1 type of fish fossil is found only in rock layer near the bottom of csnyon while a different kind of fish fossil is found only in a rock layer 4000 ft higher, near the top of csnyon
The fish in the upper layer lived more recently than the other fish
How does the discovery of radiation coming from all directions in space support the bigbang theory?
It showed that the radiation could be cosmic background radiation RBC
METEOR VS METEORITE
METEOR: Outer space
Meteorite: Landed on earth
MeteOUTSIDE
MeteoRIGHT-HERE
What is the original source kf energy which flows through the food chain?
Sunlight
Wats hemoglobin?
Protein in rbc
When a sea star cut jnto pieces such as its arm which grows from the rest of the main body
FISSION
Down syndrome
chromosome number 21 is affected
He/she flat nose
**Not tall
He/she moon face
Which are essential organ of flowers directly concerned with ovulation?
Pistils and stamen
What does a person inherit from their parents?
A. Traits
B. Behavior
C. Chromosome
D. Genes
C. Chromosome
How many neutrons are in 40/20Ca?
20
What type kf chemical reaction involved in the equation
BaCL2 + K2CO2 ~ BaC03 + KCl
Double replacement
Reactants
Products
Reactants: starting material
Product: end result
Light year is a unit of
Distance
Scalar quantities vs vector
Scalar: only has magnitude, NO DIRECTION
Volume, density, speed, energy, mass and time
Vector: Has magnitude and DIRECTIONS
Displacement, velocity, force, electric field, angular momentum,
What is the total capacitance if 2 equal capacitors(SF) are connected parallel with each other?
5F
Celsius to Kelvin
C + 273.15
