NTN Science 2 — Questions and Answers
Question 1: What is Newton's First Law of Motion commonly called?
- Law of Acceleration
- Law of Action-Reaction
- Law of Inertia (Correct answer)
- Law of Gravity
Correct answer: Law of Inertia
Newton's First Law states that an object in motion stays in motion and an object at rest stays at rest unless acted upon by an external force—known as inertia.
Question 2: In a scientific experiment, the 'control group' is used to:
- Test the new variable being studied
- Provide a baseline for comparison with no experimental variable applied (Correct answer)
- Represent the most extreme test condition
- Record all data from the experiment
Correct answer: Provide a baseline for comparison with no experimental variable applied
The control group receives no experimental treatment, serving as a baseline to measure the effect of the independent variable.
Question 3: Which of the following is a renewable energy source?
- Natural gas
- Coal
- Solar power (Correct answer)
- Nuclear fission fuel
Correct answer: Solar power
Solar power is renewable because it relies on sunlight, which is a continuously available natural resource.
Question 4: What state of matter has a definite volume but no definite shape?
- Solid
- Liquid (Correct answer)
- Gas
- Plasma
Correct answer: Liquid
Liquids have a definite volume but take the shape of their container, unlike solids (fixed shape) or gases (no fixed volume).
Question 5: Which of the following correctly identifies an example of chemical energy being converted to thermal energy?
- A battery powering a flashlight
- Burning wood in a fireplace (Correct answer)
- A fan spinning in the wind
- A solar panel generating electricity
Correct answer: Burning wood in a fireplace
Burning wood converts the chemical energy stored in wood into thermal (heat) energy.
Question 6: Which part of a cell contains the genetic material (DNA)?
- Mitochondria
- Cell membrane
- Nucleus (Correct answer)
- Ribosome
Correct answer: Nucleus
The nucleus is the cell's control center, housing DNA and directing cellular activities.
NTN Science 2
What is Newton's First Law of Motion commonly called?