🧲 Advanced Forces and Magnets (Module 1)
What happens to the magnetic force when the distance between two magnets increases?
The force weakens.
What happens when light travels from air into water?
(Answer: It bends due to refraction.)
What happens to the particles of a liquid when it turns into a gas?
(Answer: They move faster and spread out.)
What tool is used to measure a mineral’s hardness?
(Answer: Mohs Hardness Scale.)
Why do we always see the same side of the moon from Earth?
(Answer: The moon's rotation and revolution take the same amount of time.)
How does an electromagnet differ from a regular magnet?
(Answer: An electromagnet only works when an electric current flows through it.)
What type of surface reflects the most light?
(Answer: Smooth, shiny surfaces like mirrors.)
Which state of matter has the most energy: solid, liquid, or gas?
(Answer: Gas.)
What is the difference between cleavage and fracture in minerals?
(Answer: Cleavage breaks along smooth surfaces; fracture breaks unevenly.)
During which moon phase does a lunar eclipse occur?
(Answer: Full Moon.)
What form of energy is created when friction occurs?
Answer: Thermal energy.
Why does a black shirt feel warmer than a white shirt in the sun?
(Answer: Black absorbs more light energy, converting it into heat.)
What do we call the process of a liquid changing directly into a gas?
Evaporation
What are the three main types of rocks?
(Answer: Igneous, sedimentary, metamorphic.)
What causes the moon phases we see from Earth?
(Answer: The moon's position relative to Earth and the Sun.)
How can you increase the strength of an electromagnet?
(Answer: Increase the number of wire coils or the electric current.)
What is the difference between transparent, translucent, and opaque objects?
(Answer: Transparent allows light through, translucent allows some light, opaque blocks light.)
How does the density of an object determine if it will float in water?
(Answer: If it’s less dense than water, it will float.)
How do sedimentary rocks form?
(Answer: From layers of sediment compacted and cemented together.)
Why do high and low tides occur twice a day?
(Answer: The moon's gravitational pull on Earth.)
Why are magnets used in MRI machines in hospitals?
(Answer: They create strong magnetic fields to produce detailed images of the body.)
How does a concave lens affect light rays?
(Answer: It spreads them apart.)
What is the difference between a physical and chemical change?
(Answer: Physical changes don't change the substance; chemical changes form a new substance.)
What causes metamorphic rocks to change?
(Answer: Heat and pressure.)
How long does it take for the moon to complete one full cycle of phases?
(Answer: 29.5 days.)