Keywords: Waves – Spring – Vibration – Energy – Propagation

Keywords: Anaerobic respiration – Alcoholic fermentation – Carbon dioxide – Yeast – Sugar

Keywords: Excretion – Wastes – Kidneys – Sweat – Carbon dioxide – Detoxification

the goal:To discover how the water content in plants affects their weight.Materials and tools:Balance scale - Apples - Stopwatch - Strawberries - OrangesSteps:1. Weigh some slices of apple using the balance scale.2. Place the apple slices on a plate and let them dry completely, then weigh them again......

What is the reason for the occurrence of night and day?day and night – Earth’s rotation – sun – shadow – time

the goal:Draw a conclusion about the Law of Conservation of Mass.Materials and tools:Wire crucible - Test tube - Balloon - Sensitive scale - Heater - Hot water bath - Test tube holder - Stopwatch - TissuesSteps:1. Place a piece of wire crucible in a medium-sized test tube.2. Attach the balloon nozzl......

Phases of mitosis - Cell cyclecell cycle – mitosis – chromosomes – growth – cell division

Three states of matterThis experiment shows how water changes between its three states due to temperature. Ice melts when heated to become liquid water, then turns into vapor with continued heating. When the vapor touches a cold surface, it condenses back into water droplets.states of matter – solid......

Keywords: Mixing substances – Separating a mixture of liquids (water and oil) – Separating a mixture of solid and liquid – Separating a mixture of solids

Which one allows water to seep faster: soil or gravel?soil – gravel – permeability – water flow – filtration

How does the angle of inclination of sunlight affect temperatures?sunlight angle – solar incidence – temperature – absorption – seasons

What is the maximum force?force – magnitude – comparison – mass – force vectors

Formation of a low-pressure centerlow-pressure center – air pressure – wind – weather – temperature

the goal:Create a model illustrating the movement of the Earth during an earthquake.Materials and tools:Pieces of cork - a bowl - soil - a wooden piece.Steps: 1- Place the two pieces of cork next to each other in the bowl.2- Cover the cork pieces with soil.3- Gently pull the bowl about 5 c......

Metals and non-metalsmetals – nonmetals – conductivity – luster – hardness – matter

Focus, epicenter, and faultearthquakes – focus – epicenter – fault – tectonic plates

How can the reaction rate be increased?reaction rate – catalysts – temperature – concentration – surface area

What makes rocks different from one another? rocks – minerals – color – hardness – texture – geology

Measuring changemeasuring change – observation – time – comparison – measurement

Do all types of motion appear the same when represented graphically?graphing motion – speed – time – types of motion – comparison

The acceleration due to gravitygravitational acceleration – free fall – motion – time – gravity

Parts of a flower

Coefficient of frictioncoefficient of friction – force – motion – surfaces – friction

Is it true that 2N + 2N = 2N? - Sum of the magnitudes of two equal forcesresultant force – equal forces – force vectors – net force – physics