The Atmosphere
What is the most abundant gas in the Earth’s atmosphere?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
c) Nitrogen
What is the speed of sound in air at room temperature?
a) 343 m/s
b) 299,792 km/s
c) 1500 m/s
d) 1000 m/s
a) 343 m/s
What do we call a material that allows light to pass through it with minimal scattering?
a) Opaque
b) Transparent
c) Translucent
d) Reflective
b) Transparent
Who formulated the laws of motion and universal gravitation?
a) Isaac Newton
b) Albert Einstein
c) Galileo Galilei
d) Johannes Kepler
a) Isaac Newton
Which planet is closest to the Sun?
a) Venus
b) Mercury
c) Earth
d) Mars
b) Mercury
What percentage of the Earth’s atmosphere is composed of oxygen?
a) 21%
b) 78%
c) 5%
d) 1%
a) 21%
What is the unit of measurement for the frequency of sound?
a) Hertz
b) Decibel
c) Watt
d) Joule
a) Hertz
What is the speed of light in a vacuum?
a) 299,792 km/s
b) 343 m/s
c) 100,000 km/s
d) 150,000 km/s
a) 299,792 km/s
What shape are the orbits of planets around the Sun?
a) Circular
b) Elliptical
c) Triangular
d) Parabolic
b) Elliptical
Which planet is known as the Red Planet?
a) Mars
b) Jupiter
c) Saturn
d) Venus
a) Mars
Which gas is primarily responsible for trapping heat in the Earth's atmosphere and contributing to the greenhouse effect?
a) Nitrogen
b) Oxygen
c) Carbon dioxide
d) Argon
c) Carbon dioxide
What is the term for the reflection of sound waves?
a) Refraction
b) Diffraction
c) Echo
d) Resonance
c) Echo
Which color of light has the shortest wavelength?
a) Red
b) Green
c) Blue
d) Violet
d) Violet
Which planet has the strongest gravitational pull in the solar system?
a) Jupiter
b) Saturn
c) Earth
d) Mars
a) Jupiter
What is the hottest planet in the solar system?
a) Mercury
b) Venus
c) Mars
d) Jupiter
b) Venus
What causes the auroras (Northern and Southern Lights)?
a) Solar winds interacting with the magnetic field
b) Volcanic activity
c) Ocean currents
d) Earthquake activity
a) Solar winds interacting with the magnetic field
What determines the pitch of a sound?
a) Amplitude
b) Frequency
c) Wavelength
d) Speed
b) Frequency
What is the phenomenon called when light bends as it passes through different mediums?
a) Reflection
b) Refraction
c) Diffraction
d) Dispersion
b) Refraction
What is the name of the force that resists the relative motion of objects or surfaces?
a) Tension
b) Friction
c) Gravitational force
d) Air resistance
b) Friction
What is the term for a rocky object that orbits the Sun, typically found in the asteroid belt?
a) Comet
b) Asteroid
c) Meteoroid
d) Satellite
b) Asteroid
Which layer of the atmosphere contains the ozone layer?
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere
b) Stratosphere
What is the term for sounds with frequencies higher than the human hearing range?
a) Ultrasonic
b) Infrasonic
c) Subsonic
d) Supersonic
a) Ultrasonic
Which type of lens is used to correct nearsightedness?
a) Convex lens
b) Concave lens
c) Cylindrical lens
d) Biconvex lens
b) Concave lens
What causes the Earth's tides?
a) The Sun's gravity
b) The Moon's gravity
c) Wind
d) Ocean currents
b) The Moon's gravity
What is the name of the spacecraft that was the first to fly by Pluto in 2015?
a) Voyager 1
b) Cassini
c) New Horizons
d) Galileo
c) New Horizons