SCIENCE

Question 1

What is the primary function of hemoglobin?

Answer 1

Transporting oxygen in the blood

Hemoglobin is a protein in red blood cells that binds oxygen for delivery to tissues.

Question 2

What type of organism does not have a backbone?

Answer 2

Jellyfish

Jellyfish are invertebrates that lack a skeletal structure.

Question 3

What natural phenomenon is produced by heat and can create a breeze?

Answer 3

Clouds

Clouds form when water vapor condenses into droplets due to cooling, which can occur with heat changes.

Question 4

What is the process called when minerals and crystals form?

Answer 4

Crystalization

Crystalization occurs when minerals solidify from a solution or melt.

Question 5

What is the significance of a pH level less than 7?

Answer 5

Indicates acidity

A pH level below 7 signifies that a solution is acidic.

Question 6

What two parts of a plant are essential for growth and survival?

Answer 6

Root & Stem

Roots anchor the plant and absorb nutrients, while stems provide support and transport nutrients.

Question 7

What is formed when a base reacts with H+?

Answer 7

Cation

A cation is a positively charged ion that forms when a base accepts protons.

Question 8

What are the three layers of the lithosphere?

Answer 8

Upper mantle, crust

The lithosphere includes the upper mantle and the crust, which are crucial for tectonic activity.

Question 9

What process occurs when moisture inside a car evaporates?

Answer 9

Evaporation

Evaporation is the process where liquid turns into vapor, often accelerated by heat.

Question 10

What is the chemical element represented by the symbol ‘C’?

Answer 10

Carbon

Carbon is essential for life and is a key component of organic molecules.

Question 11

What process do producers use to create food?

Answer 11

Photosynthesis

Photosynthesis converts light energy into chemical energy in plants, algae, and some bacteria.

Question 12

What is the neutron notation for an atom with 20 protons and 20 neutrons?

Answer 12

40/20

The notation indicates the atomic mass (40) and atomic number (20) of the element.

Question 13

What instrument measures seismic activity?

Answer 13

Seismograph

A seismograph detects and records the intensity of seismic waves during earthquakes.

Question 14

What are seismic waves?

Answer 14

Elastic waves generated by impulses

Seismic waves are produced by earthquakes or explosions and travel through the Earth.

Question 15

What is the chemical formula for water?

Answer 15

H2O

Question 16

True or False: The nucleus of an atom contains protons and neutrons.

Answer 16

True

Question 17

Fill in the blank: The process by which plants convert sunlight into energy is called _____.

Answer 17

photosynthesis

Question 18

Which planet is known as the Red Planet?

Answer 18

Mars

Question 19

What is the powerhouse of the cell?

Answer 19

Mitochondria

Question 20

Multiple Choice: Which of the following is a noble gas? A) Oxygen B) Helium C) Nitrogen

Answer 20

B) Helium

Question 21

What is the primary gas found in the Earth’s atmosphere?

Answer 21

Nitrogen

Question 22

True or False: The speed of light is approximately 300,000 kilometers per second.

Answer 22

True

Question 23

What is the term for the variable that is manipulated in an experiment?

Answer 23

Independent variable

Question 24

Fill in the blank: The basic unit of life is the _____.

Answer 24

cell

Question 25

Which organ is responsible for pumping blood throughout the body?

Answer 25

Heart

Question 26

Multiple Choice: What is the most abundant element in the universe? A) Oxygen B) Hydrogen C) Carbon

Answer 26

B) Hydrogen

Question 27

What is the law of conservation of mass?

Answer 27

Mass is neither created nor destroyed in a chemical reaction.

Question 28

True or False: DNA stands for Deoxyribonucleic Acid.

Answer 28

True

Question 29

What type of bond involves the sharing of electron pairs between atoms?

Answer 29

Covalent bond

Question 30

Fill in the blank: The _____ is the smallest particle of an element that retains its chemical properties.

Answer 30

atom

Question 31

Which scientist is known for the theory of evolution by natural selection?

Answer 31

Charles Darwin

Question 32

Multiple Choice: Which of the following is a type of renewable energy? A) Coal B) Solar C) Natural Gas

Answer 32

B) Solar

Question 33

What is the function of red blood cells?

Answer 33

To carry oxygen throughout the body.

Question 34

True or False: The Earth orbits the Sun in an elliptical shape.

Answer 34

True

Question 35

What is the primary component of the Earth's crust?

Answer 35

Silicate minerals

Question 36

Fill in the blank: The scientific method typically begins with a _____ or observation.

Answer 36

question

Question 37

What are the three states of matter?

Answer 37

Solid, liquid, gas

Question 38

Multiple Choice: Which of the following is a greenhouse gas? A) Oxygen B) Carbon Dioxide C) Nitrogen

Answer 38

B) Carbon Dioxide

Question 39

What is the acceleration due to gravity on Earth?

Answer 39

9.81 m/s²

Question 40

True or False: The pH scale measures the acidity or alkalinity of a solution.

Answer 40

True

Question 41

What is the process of converting a liquid to a gas called?

Answer 41

Evaporation

Question 42

Copernican theory

Answer 42

Sun is the center of the solar system and the heavenly bodies around it

Question 43

What is the largest division of time in geological scale? A. Eon B. Era C. Epoch D. Period E. Age

Answer 43

A. Eon

Question 44

Scientist says that som low mountains today were once more than 4x higher

Answer 44

Cuz diff layers of soil found beneath the mountains

Question 45

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

Answer 45

The fish in the upper layer lived more recently than the other fish

Question 46

How does the discovery of radiation coming from all directions in space support the bigbang theory?

Answer 46

It showed that the radiation could be cosmic background radiation RBC

Question 47

METEOR VS METEORITE

Answer 47

METEOR: Outer space Meteorite: Landed on earth MeteOUTSIDE MeteoRIGHT-HERE

Question 48

What is the original source kf energy which flows through the food chain?

Answer 48

Sunlight

Question 49

Wats hemoglobin?

Answer 49

Protein in rbc

Question 50

When a sea star cut jnto pieces such as its arm which grows from the rest of the main body

Answer 50

FISSION

Question 51

Down syndrome

Answer 51

chromosome number 21 is affected He/she flat nose **Not tall He/she moon face

Question 52

Which are essential organ of flowers directly concerned with ovulation?

Answer 52

Pistils and stamen

Question 53

What does a person inherit from their parents? A. Traits B. Behavior C. Chromosome D. Genes

Answer 53

C. Chromosome

Question 54

How many neutrons are in 40/20Ca?

Answer 54

20

Question 55

What type kf chemical reaction involved in the equation BaCL2 + K2CO2 ~ BaC03 + KCl

Answer 55

Double replacement

Question 56

Reactants Products

Answer 56

Reactants: starting material Product: end result

Question 57

Light year is a unit of

Answer 57

Distance

Question 58

Scalar quantities vs vector

Answer 58

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,

Question 59

What is the total capacitance if 2 equal capacitors(SF) are connected parallel with each other?

Answer 59

5F

Question 60

Celsius to Kelvin

Answer 60

C + 273.15