Rocks & Fossils
What are rocks primarily made of?
Minerals
What is an example of an indicator of chemical change?
Colour change, gas production, temperature change, formation of a precipitate, etc
How is energy best defined?
The ability to do work or cause change.
What is the purpose of writing an aim in a scientific study?
To clearly state the main purpose or goal of the experiment, describing what the study intends to investigate.
What is Miss Bailey's favourite colour?
Green
What is the molten rock called before it erupts from a volcano?
Magma
In the chemical equation:
Which chemicals and/or side shows the products, and which chemicals and/or side shows the reactants?
Reactants: left side (CO2 + H2O)
Products: right side (C6H12O6 + O2)
According to the law of conservation of energy, what can happen to energy during a process?
Energy can be transformed or transferred but cannot be created or destroyed.
How does a hypothesis differ from an aim in a scientific study?
A hypothesis is a testable prediction about the outcome of the experiment, while an aim is a statement of what the study seeks to accomplish.
What date is your exam?
Monday 25th of November
Which type of rock is most likely to contain fossils?
Sedimentary rock
What is the law called that explains why the number of atoms for each element is the same on both sides of the equation
The law of conservation of mass
Provide an example of potential energy
A book sitting on a shelf (or any object with stored energy due to its position or condition).
Identify the independent variable in an experiment where students test the effect of different amounts of sunlight on plant growth.
Amounts of sunlight
Dependent variable would be plant growth
Which country has the highest life expectancy?
Hong Kong
Why does oceanic crust subduct beneath continental crust at a convergent boundary?
Because oceanic crust is denser than continental crust.
Rust is formed by a chemical reaction between iron, water and oxygen. What is the product of this reaction?
Rust
A light bulb is supplied with 200J of electrical energy and converts 50J of this energy into light energy. What is the efficiency of the light bulb?
25% (Efficiency = (50J / 200J) × 100).
Why is it important to control variables in a scientific study, and what is a controlled variable?
Controlling variables is important to ensure that the results are due to the independent variable only. A controlled variable is a factor kept constant throughout the experiment to ensure fair testing.
What is a word, phrase, number, or other sequence of characters that reads the same backward as forward?
Palindrome
Which type of rock forms when molten rock cools and hardens on Earth’s surface, and what is it commonly known as?
Extrusive igneous rock
Challenge - no need to know this, just checking your knowledge!
Why does burning methane (CH₄) produce carbon dioxide and water as products?
Because methane reacts with oxygen in a combustion reaction, breaking molecular bonds in CH₄ and O₂ and forming new bonds in CO₂ and H₂O.
When electrical energy is used to produce light in a bulb, is this an example of energy being transformed or transferred?
Transformed (from electrical energy to light energy).
When drawing a conclusion, what two key aspects should you consider to determine if your hypothesis was supported?
You should consider the data collected and whether it aligns with the prediction made in the hypothesis. Additionally, consider any limitations or errors that might have influenced the results.
Which is the only body part that is fully grown from birth?
Your eyes