Biology
What is the powerhouse of the cell?
Mitochondria
Which gas makes up most of the Earth’s atmosphere?
Nitrogen
What type of energy is stored in a stretched spring?
Elastic potential energy
What is the force that keeps planets in orbit around the Sun?
Gravity
Carbon dioxide + water + ( )
---> oxygen + glucose.
Name the process of the chemical equation shown above. What is the missing substance from the equation above?
Photosynthesis. Sunlight.
What is the process of animals getting energy from food called?
Cellular respiration
Endothermic reaction is the reaction when
Heat is absorbed
What is the term for the bending of light as it passes from one medium to another?
Refraction
What is the term for the path that a planet takes as it revolves around the Sun?
Orbit
Refer to the picture.
Name the process shown in the diagram?
Gaseous exchange
What is the primary role of red blood cells?
To transport oxygen
What type of reaction occurs when a more reactive element displaces a less reactive one from a compound?
Displacement reaction
What is the name of the phenomenon where sound waves bounce off a surface?
Echo
What cause the movement of tectonic plate?
Convection current, magma flow underneath Earth's crust
Refer to the picture.
Form the word equation for the chemical reaction shown in the picture.
Iron + Oxygen + Water ---> Hydrated Iron oxide
What is the process by which organisms with favorable traits survive and reproduce called?
Natural selection
What is the name of the substance with chemical formula of H2SO4?
Sulphuric acid
Which principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object?
Archimedes' principle
Moon is said to have some similarity with the Earth. What theory backs this information?
Collision Theory
Refer to the picture.
Give one similarities and one difference between waveform A and waveform B.
Similarity: Amplitude
Difference: Frequency
What is the name of the process by which water moves through a plant from roots to leaves?
Transpiration
Number of valence electron and shells of the element located at group 17 and period 2. Name this element.
7 valence electrons, 2 shells. Chlorine
What is the formula used to find pressure in electricity?
Pressure = Voltage / Current
What will happen to the distance between Earth and Sun if the size of Earth increases?
Closer. The larger the size of an object, the larger the gravity.
Refer to the diagram provided.
Based on the diagram, how many trophic levels are there in the food web?
3