Chemistry
Identify the reactants in the word equation:
carbon dioxide + water -> glucose + oxygen
carbon dioxide and water
What are the letters that represent the 4 nucleotide bases in DNA?
A, T, C, G
What is inertia?
The tendency of an object to resist changes to its motion.
What is the major process which moves carbon from living things into the atmosphere?
Respiration
What type of reaction involves a fuel reacting with oxygen to release heat and light?
Combustion reaction
What is the name of the process of gradual evolution over time due to favourable traits?
Natural selection
A cyclist moves 60m in 4 seconds. Calculate their speed.
15m/s
What is the main gas responsible for trapping heat in Earth's atmosphere?
Carbon Dioxide
Name the products formed when an acid reacts with a metal
Salt and Hydrogen gas
What is the name for a length of DNA that codes for a characteristic?
Gene
When forces on an object are unbalanced, what happens to the object's motion?
accelerates, changes speed and/or direction
What is the process of warm air rising and cool air sinking known as?
Convection current
What type of reaction is when a compound breaks down into simpler substances?
Decomposition
Whales and sharks have similar physical features but are not closely related, what type of evolution is this?
Convergent
Describe a real-life scenario of Newtons 3rd law.
Any correct response.
Describe the impacts of greenhouse gases on the environment.
Any correct response.
In an endothermic reaction, energy moves in which direction?
Moves into the system/absorbed from the surroundings
How does genetic variation arise in a population?
Mutations and mixing of genes during reproduction.
A force of 12N produces an acceleration of 3m/s2. Calculate the mass of the object?
4kg
Describe why deforestation can alter the water cycle.
Fewer trees reduce transpiration.