This is formed when populations of different species live in one area
What is a community
100
Some of these elements have properties that are a mixture of metals and non-metals…..
What are METALLOIDS
100
What is the major health problem with air
What are respiratory problems
100
A pathway for electrons to flow from a power source to a load then to another load and back again.
What is a series circuit.
100
A solid body, usually a fragment of rock or metal, travelling in space with no particular path outside of the Earth’s atmosphere
What is a Meteoriod?
200
Packages of DNA are called
What are chromosomes
200
If an atom has 24 protons it must also have 24 …. ELECTRONS
What are electrons
200
The breakdown of materials by living things is known as ____________________
What is biodegradation
200
An adjustable resistor that can regulate and control the current in a circuit.
What is a rheostat?
200
A solid body, usually a fragment of rock or metal from space, that has landed on the Earth’s surface.
What is a Meteorite
300
This type of conservation occurs outside an organisms natural environment……ex-situ
What is ex-situ
300
A molecular compound that is made up of 2 atoms of nitrogen and three atoms of oxygen is called ……
What is DINITROGEN TRIOXIDE
300
The difference between a macronutrient and a micronutrient?
What is Macronutrients are needed in 100g/ml or more, micronutrients are needed in amounts less that 100 mg/l.
300
Energy transformation in an electric kettle
What is electrical energy to thermal energy?
300
During this first stage of a star’s life, the interior heats up eventually reaching the point of fusion.?(10 000 000°C).
What is a Protostar
400
Genetics is the study of ________________
What is heredity
400
A mixture where coarser particles will settle out over time is called a ____________
What is a SUSPENSION
400
________________________ is the material on which an organism moves or lives.
What is a substrate
400
Energy Transformation: Vacuum Cleaner
What is electrical energy to mechanical energy.
400
This technique is used to measure distances indirectly on the ground or in space. It is done by measuring the angles between a baseline and the target object
What is triangulation
500
An example of this type of asexual reproduction is when an amoeba splits into two identical parts…..
What is binary fission
500
_________________are the most reactive elements. They make up group 1 on the periodic table ….
What are alkali metals
500
Biodegradation ___________________ in winter months and _______________ in summer months
What is slows down, speeds up
500
A energy possessed by an object because of its motion or its potential to move.
What is mechanical energy?
500
This technique is used to measure distances indirectly on the ground or in space. It is done by calculating the angles from viewing an objects apparent shift in position.