Space
What is gravity?
This force keeps planets in orbit around the Sun.
What is a cell?
The basic unit of life.
This type of charge is carried by a proton.
Proton.
What is the unit of force in the SI system.
Newton.
This state of matter has a definite shape and volume.
Solid.
What is the Sun?
The star at the centre of our Solar System.
What is the nucleus?
DNA is located in this part of a eukaryotic cell.
What is an element?
A substance made of only one type of atom.
Newton’s First Law is also known as the law of ___.
Inertia
Which planet is known for its prominent rings.
Saturn.
What is a supernova?
These large explosions mark the death of some massive stars.
What is natural selection?
The process by which organisms with advantageous traits survive and reproduce.
The horizontal rows on the periodic table are called ___.
Periods
What is the Law of Conservation of Energy?
This law states that energy cannot be created or destroyed.
What is the independent variable?
A fair test changes only this one thing.
What is the Big Bang Theory?
The theory that explains the origin of the universe.
The acronym DNA stands for ____.
Deoxyribonucleic acid
What determines chemical reactivity?
The number of electrons in the outer shell of an atom determines this property.
What is the equation to calculate acceleration?
F = ma
What is the name given to the type of data that includes numbers and measurements?
Quantitative data.
What is a black hole?
A region of space where gravity is so strong that not even light can escape.
What is evolution?
The scientific term for the change in species over time due to genetic variation.
What is a single displacement reaction?
This type of chemical reaction involves one element replacing another in a compound, such as when a metal reacts with an acid.
A 2 kg object is lifted to a height of 5 meters. Calculate its gravitational potential energy. (Use g = 9.8 m/s²)
GPE = m × g × h = 2 × 9.8 × 5 = 98 J
What is a catalyst?
This is the name for a substance that speeds up a chemical reaction without being used up.