Scientific Process
What is the first step in the scientific method?
Observation
What tool is used to measure temperature?
Thermometer.
What should you do if your hypothesis is proven wrong?
Repeat the experiment or modify the hypothesis based on the data.
What is the SI unit for energy?
Joule (J).
What is the main organ responsible for pumping blood throughout the body?
The heart.
What is a hypothesis?
A testable statement based on observation.
What is the name of the tool used to transfer small amounts of liquid?
Pipette.
What is a constant variable?
A factor that does not change throughout the experiment.
What is the basic formula for calculating force?
Force = Mass × Acceleration (F = ma).
What is the basic unit of life?
The cell.
What is the purpose of a control experiment?
To ensure the results of the experiment are valid and not influenced by external factors.
What is the function of a beaker in a science experiment?
To measure and hold liquids.
What is the purpose of a chart or graph in an experiment?
To visualise and analyse data.
What is the name of the theory that explains gravitational force between two objects?
Newton’s Law of Gravitation.
What is the name of the process where plants produce food using sunlight?
Photosynthesis.
What is the last step in the scientific method?
Drawing conclusions based on data.
What is the name of the tool used to measure length with high precision?
Vernier caliper.
What happens if an experiment is conducted without a control variable?
The results may be invalid or inaccurate
What does inertia mean?
The property of an object to resist changes in its state of motion unless acted upon by an external force.
What molecule carries genetic information in living organisms?
DNA.
State the difference between a manipulated variable and a responding variable.
A manipulated variable is the factor that is changed, while the responding variable is the result of that change.
What tool is used to separate mixtures based on density?
Centrifuge.
What is an essential step before starting an experiment?
Planning the procedure and ensuring all tools and materials are prepared.
What is the relationship between pressure, force, and area?
Pressure = Force ÷ Area.
What is the main difference between plant and animal cells?
Plant cells have a cell wall and chloroplasts, while animal cells do not.