Matter and Atomic Structure
What is the smallest unit of matter that retains the properties of an element?
A. Molecule
B. Atom
C. Proton
D. Neutron
B. Atom
Which law states that an object at rest stays at rest unless acted upon by a force?
A. First Law
B. Second Law
C. Third Law
D. Law of Gravity
A. First Law
What type of wave requires a medium to travel?
A. Electromagnetic
B. Mechanical
C. Light
D. Radio
B. Mechanical
What is required for an electric current to flow?
A. Open circuit
B. Closed circuit
C. Battery only
D. Magnet
B. Closed circuit
Which energy source is renewable?
A. Coal
B. Oil
C. Solar
D. Natural gas
C. Solar
Which subatomic particle has a negative charge?
A. Proton
B. Neutron
C. Electron
D. Nucleus
C. Electron
What happens to acceleration when force increases and mass stays the same?
A. Decreases
B. Increases
C. Stays the same
D. Disappears
B. Increases
Sound travels fastest through:
A. Solids
B. Liquids
C. Gases
D. Vacuum
A. Solids
Which material is a good conductor of electricity?
A. Wood
B. Plastic
C. Rubber
D. Copper
B. Plastic
Heat transfer through direct contact is called:
A. Convection
B. Radiation
C. Conduction
D. Reflection
C. Conduction
The atomic number of an element represents the number of:
A. Neutrons
B. Protons
C. Electrons + neutrons
D. Energy levels
B. Protons
Which type of energy is stored energy?
A. Kinetic
B. Thermal
C. Potential
D. Mechanical
C. Potential
The height of a wave is called its:
A. Frequency
B. Wavelength
C. Amplitude
D. Speed
C. Amplitude
. What is the unit for electric current?
A. Volt
B. Ohm
C. Ampere
D. Watt
C. Ampere
Which process involves heat transfer by movement of fluids?
A. Conduction
B. Convection
C. Radiation
D. Insulation
B. Convection
Which state of matter has a definite volume but no definite shape?
A. Solid
B. Liquid
C. Gas
D. Plasma
B. Liquid
What is the unit used to measure force?
A. Joule
B. Watt
C. Newton
D. Meter
C. Newton
What determines the pitch of a sound?
A. Amplitude
B. Frequency
C. Speed
D. Volume
B. Frequency
Which device uses electromagnetism?
A. Light bulb
B. Electric motor
C. Thermometer
D. Ruler
B. Electric motor
What happens when temperature increases?
A. Particles move slower
B. Particles stop moving
C. Particles move faster
D. Matter disappears
C. Particles move faster
A substance made of two or more elements chemically combined is a:
A. Mixture
B. Element
C. Compound
D. Solution
C. Compound
Which example shows kinetic energy?
A. A book on a shelf
B. A stretched rubber band
C. A rolling ball
D. A battery
C. A rolling ball
Which wave type transfers energy through vibrations?
A. Light
B. Sound
C. Gamma rays
D. X-rays
B. Sound
What happens when like magnetic poles are placed together?
A. Attract
B. Repel
C. Disappear
D. Combine
B. Repel
Which energy transformation occurs in a flashlight?
A. Chemical → Electrical → Light
B. Light → Chemical
C. Mechanical → Electrical
D. Thermal → Nuclear
A. Chemical → Electrical → Light