PHYSICAL SCIENCE
1. Which of the following is an example of a chemical change?
A. Ice melting into water
B. Iron rusting
C. Water boiling into steam
D. A glass breaking
2. Which subatomic particle is responsible for the chemical behavior of an atom?
A. Proton
B. Neutron
C. Electron
D. Nucleus
3. What law explains the relationship between the pressure and volume of a gas at constant temperature?
A. Boyle's Law
B. Charles's Law
C. Avogadro's Law
D. Newton's Law
4. Which of the following is a characteristic of a covalent bond?
A. Transfer of electrons
B. Sharing of electrons
C. Attraction between ions
D. Formation of charged particles
5. The type of energy possessed by a stretched rubber band is called:
A. Kinetic energy
B. Chemical energy
C. Elastic potential energy
D. Thermal energy
6. What is the primary reason for the Earth's seasons?
A. The Earth's distance from the Sun
B. The tilt of the Earth's axis
C. The rotation of the Earth
D. The shape of the Earth’s orbit
7. Which type of wave requires a medium to propagate?
A. Light wave
B. Sound wave
C. Radio wave
D. X-ray
8. Which of the following best explains the concept of inertia?
A. A body at rest tends to remain at rest unless acted upon by an external force.
B. The rate of change of velocity of an object is proportional to the net force acting on it.
C. For every action, there is an equal and opposite reaction.
D. The energy required to accelerate an object is proportional to its mass.
9. Which of the following is the best conductor of electricity?
A. Glass
B. Rubber
C. Copper
D. Wood
10. Which planet in the solar system has the most moons?
A. Mars
B. Saturn
C. Jupiter
D. Uranus
11. What happens to the pressure of a gas if the volume is decreased while the temperature remains constant, according to Boyle’s Law?
A. The pressure increases.
B. The pressure decreases.
C. The pressure remains constant.
D. The pressure depends on the type of gas.
12. Which process converts light energy into chemical energy in plants?
A. Respiration
B. Photosynthesis
C. Fermentation
D. Transpiration
13. What type of force is responsible for holding the nucleus of an atom together?
A. Gravitational force
B. Electromagnetic force
C. Strong nuclear force
D. Weak nuclear force
14. When two objects collide and stick together, what type of collision is this?
A. Elastic collision
B. Inelastic collision
C. Perfectly elastic collision
D. Superelastic collision
15. Which of the following is an example of a renewable energy source?
A. Coal
B. Natural gas
C. Solar energy
D. Oil
EARTH SCIENCE
1. What layer of the Earth is composed mainly of iron and nickel and is responsible for generating the Earth’s magnetic field?
A. Crust
B. Mantle
C. Outer core
D. Inner core
2. Which process is primarily responsible for the formation of sedimentary rocks?
A. Cooling of magma
B. Melting
C. Compaction and cementation
D. Sublimation
3. Which of the following is a driving force behind plate tectonics?
A. Ocean currents
B. Gravitational pull from the Sun
C. Convection currents in the mantle
D. Magnetic fields
4. What type of boundary occurs where two tectonic plates move away from each other?
A. Convergent boundary
B. Divergent boundary
C. Transform boundary
D. Subduction zone
5. Which of the following events is most likely to occur at a convergent plate boundary?
A. Formation of new crust
B. Earthquakes
C. Volcanoes
D. Both B and C
6. The measure of the amount of water vapor in the air is called:
A. Temperature
B. Humidity
C. Precipitation
D. Dew point
7. Which type of rock forms when molten material cools and solidifies?
A. Sedimentary
B. Igneous
C. Metamorphic
D. Fossiliferous
8. What phenomenon occurs when cold ocean water rises to the surface, bringing nutrients that support marine life?
A. Downwelling
B. Upwelling
C. Thermohaline circulation
D. Tidal surge
9. The Richter scale is used to measure the:
A. Depth of the ocean
B. Magnitude of an earthquake
C. Speed of tectonic plates
D. Age of rocks
10. What is the most abundant gas in the Earth’s atmosphere?
A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Helium
11. What causes the phases of the Moon?
A. The Moon’s rotation on its axis
B. The Moon's distance from the Earth
C. The relative positions of the Earth, Moon, and Sun
D. The Earth’s shadow
12. Which of the following is an effect of global warming?
A. Increased polar ice coverage
B. Rising sea levels
C. Decreased ocean acidity
D. Slower melting of glaciers
13. What is the primary source of energy that drives the water cycle?
A. The Moon
B. The Earth's core
C. The Sun
D. Wind
14. What type of rock is formed through the process of intense heat and pressure altering existing rock?
A. Igneous
B. Sedimentary
C. Metamorphic
D. Volcanic
15. What is the process by which water vapor turns into liquid water in the atmosphere?
A. Evaporation
B. Sublimation
C. Condensation
D. Precipitation
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