Earth and Space
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
The Solar System and Planets
SubtopicThe Solar System and Planets under Earth and Space for Grade 6 IB.
Preview questions (no answers)
- 1.
What is the name of the system containing the Sun and all objects that travel around it?
A.The Galaxy
B.The Solar System
C.The Universe
D.The Constellation
- 2.
Which of these is a characteristic of all outer planets?
A.They are very small
B.They have rocky surfaces
C.They have rings
D.They have no moons
- 3.
Where is the Kuiper Belt located?
A.Between Mars and Jupiter
B.Between Earth and Venus
C.Beyond the orbit of Neptune
D.Inside the Sun
- 4.
Which planet is the fifth one from the Sun?
A.Mars
B.Jupiter
C.Saturn
D.Uranus
- 5.
Which of the following describes the core of most gas giant planets?
A.They have no core and are made only of gas.
B.They have a solid, rocky or metallic core many times the mass of Earth.
C.They have a liquid water core.
D.They have a core made of burning hydrogen like the Sun.
- 6.
How does the temperature of a planet generally relate to its distance from the Sun?
A.Temperature increases as distance increases.
B.Temperature remains constant regardless of distance.
C.Temperature generally decreases as distance increases.
D.Temperature only depends on the number of moons a planet has.
- 7.
Which moon is known for being the most volcanically active body in our solar system?
A.Europa
B.Io
C.Ganymede
D.The Moon
- 8.
Which of these planets has a day (rotation) that is longer than its year (revolution)?
A.Venus
B.Mercury
C.Mars
D.Jupiter
- 9.
What is the source of the Sun's energy?
A.Nuclear fusion of Hydrogen into Helium
B.Nuclear fission of Uranium into Lead
C.Chemical combustion of Oxygen and Carbon
D.Gravitational collapse of its outer layers
- 10.
Which of the following describes the 'Zenith'?
A.The point in the sky directly above an observer
B.The furthest point in a planet's orbit from the Sun
C.The exact moment of the summer solstice
D.The brightest star in a constellation
Download the worksheet for Earth and Space - The Solar System and Planets to practice offline. It includes additional chapter-level practice questions.
Earth’s Rotation and Revolution
SubtopicEarth’s Rotation and Revolution under Earth and Space for Grade 6 IB.
Preview questions (no answers)
- 1.
If Earth's axis had zero tilt, what would happen to the seasons?
A.Seasons would be more extreme
B.Seasons would stay the same
C.There would be no seasons
D.Seasons would change every week
- 2.
How many months does it take for Earth to complete one-quarter (1/4) of its revolution?
A.1 month
B.3 months
C.6 months
D.4 months
- 3.
Which star appears to stay almost perfectly still in the night sky because the Earth's axis points toward it?
A.Sirius
B.The Sun
C.Polaris (The North Star)
D.Betelgeuse
- 4.
What happens to the number of daylight hours in the Northern Hemisphere immediately after the Summer Solstice?
A.They increase
B.They stay the same
C.They decrease
D.They disappear
- 5.
Which of the following best defines 'revolution' in an astronomical context?
A.A planet spinning on its axis
B.The time it takes for a moon to orbit a planet
C.The motion of one object around another
D.The explosion of a star
- 6.
Which of these contributes most to the difference in temperatures between the poles and the equator?
A.The rotation of the Earth
B.The angle at which sunlight hits the Earth's surface
C.The distance of the poles from the Sun
D.The thickness of the atmosphere at the poles
- 7.
What do we call the point in the Earth's orbit where it is closest to the Sun?
A.Aphelion
B.Perihelion
C.Equinox
D.Solstice
- 8.
Why is the winter solstice in the Northern Hemisphere the day with the fewest hours of daylight?
A.The Earth is furthest from the Sun on that day.
B.The Northern Hemisphere is tilted at its maximum angle away from the Sun.
C.The Earth's rotation slows down due to the cold temperatures.
D.The Sun's output of light decreases during the winter months.
- 9.
At the moment of the Summer Solstice in the Northern Hemisphere, which of these is true about the South Pole?
A.The Sun is at its highest point in the sky.
B.The Sun is just rising on the horizon.
C.The Sun is below the horizon.
D.The Sun is directly at the Zenith.
- 10.
What is the relationship between the speed of Earth's revolution and the gravitational pull of the Sun?
A.The speed is constant regardless of gravitational pull.
B.Earth moves faster when it is closer to the Sun because the gravitational pull is stronger.
C.Earth moves slower when it is closer to the Sun to prevent crashing into it.
D.Gravitational pull only affects rotation, not revolution.
Download the worksheet for Earth and Space - Earth’s Rotation and Revolution to practice offline. It includes additional chapter-level practice questions.
Causes of Seasons
SubtopicCauses of Seasons under Earth and Space for Grade 6 IB.
Preview questions (no answers)
- 1.
During which season is the Northern Hemisphere tilted most directly toward the Sun?
A.Autumn
B.Winter
C.Summer
D.Spring
- 2.
Which hemisphere experiences 'Midnight Sun' (24 hours of light) in June?
A.Northern Hemisphere
B.Southern Hemisphere
C.Eastern Hemisphere
D.Western Hemisphere
- 3.
Which of these is NOT a cause of the seasons?
A.Earth's tilt
B.Earth's revolution
C.The distance between Earth and Sun
D.The angle of sunlight
- 4.
What would happen to the seasons if Earth's tilt increased to ?
A.They would disappear
B.They would become less noticeable
C.They would become much more extreme
D.Nothing would change
- 5.
How would the seasonal difference in daylight hours be affected if the Earth's tilt were only instead of ?
A.The difference between summer and winter day lengths would be much smaller.
B.The difference between summer and winter day lengths would be much larger.
C.There would be no daylight at the poles at all.
D.Day and night would always be exactly 12 hours everywhere.
- 6.
During the September Equinox, which of the following is true?
A.Spring begins in the Northern Hemisphere.
B.Spring begins in the Southern Hemisphere.
C.The North Pole begins its 6 months of constant daylight.
D.The Sun is directly over the Tropic of Capricorn.
- 7.
What is the result of the Earth revolving around the Sun while its axis is tilted?
A.The Moon's gravity changes.
B.The North Pole always faces the Sun.
C.The seasons cycle throughout the year.
D.The Earth moves closer to Mars.
- 8.
What is the significance of the Tropics of Cancer and Capricorn?
A.They mark the furthest north and south latitudes where the Sun can be seen directly overhead.
B.They mark the boundaries of the permanent ice caps.
C.They are the only places on Earth where day and night are always equal.
D.They are the locations where the Earth's magnetic poles are found.
- 9.
Which of the following would happen if the Earth's speed of revolution around the Sun doubled?
A.Each season would last twice as long.
B.The year would be twice as long.
C.Each season would last half as long.
D.The Earth would no longer have seasons.
- 10.
During the course of one year, how does the tilt of the Earth's axis relative to the stars change?
A.It wobbles back and forth every month.
B.It stays pointed in the same direction (toward Polaris).
C.It rotates to follow the Sun.
D.It flips between summer and winter.
Download the worksheet for Earth and Space - Causes of Seasons to practice offline. It includes additional chapter-level practice questions.
Phases of the Moon and Eclipses
SubtopicPhases of the Moon and Eclipses under Earth and Space for Grade 6 IB.
Preview questions (no answers)
- 1.
Approximately how many weeks does it take for the Moon to complete its entire cycle of phases?
A.1 week
B.2 weeks
C.4 weeks
D.52 weeks
- 2.
During the First Quarter phase, how much of the Moon's visible side is illuminated?
A.100%
B.75%
C.50%
D.25%
- 3.
What happens during a solar eclipse?
A.The Earth is between the Sun and Moon
B.The Moon is between the Sun and Earth
C.The Sun is between the Earth and Moon
D.The Moon stops rotating
- 4.
A lunar eclipse occurs when the Moon passes through the shadow of which object?
A.The Sun
B.The Earth
C.Mars
D.Jupiter
- 5.
A total lunar eclipse can be seen by everyone on the night side of Earth, while a total solar eclipse is only visible from a very narrow path. Based on the geometry of the shadows shown in the diagram, why does this occur?
A.The Moon's shadow is stretched by the Earth's atmosphere.
B.Solar eclipses only occur when the Moon is at its furthest distance from Earth.
C.Lunar eclipses only happen during the day when more of the Earth is facing the Sun.
D.The Earth is much larger than the Moon, creating a significantly wider shadow area (umbra).
- 6.
The diagram shows the Moon at four different points in its orbit around Earth. If the Sun's rays are coming from the left and the Moon orbits counter-clockwise, which position represents the Moon when it is in the 'Waxing Gibbous' phase?
A.Position 1
B.Position 2
C.Position 3
D.Position 4
- 7.
If you observe a solar eclipse, which phase MUST the moon be in?
A.Full Moon
B.New Moon
C.First Quarter
D.Third Quarter
- 8.
Why do the 'horns' (cusps) of a Crescent Moon always point away from the Sun?
A.Because the Sun's gravity pushes the Moon's atmosphere away.
B.Because the illuminated side of the Moon must face the light source.
C.Because the Earth's shadow carves out the crescent shape.
D.Because the Moon rotates in the opposite direction of the Sun.
- 9.
If an observer sees a First Quarter moon, what will they see in approximately 7 days?
A.New Moon
B.Full Moon
C.Third Quarter
D.Waning Crescent
- 10.
Which of the following describes a 'Syzygy'?
A.The point where the Moon is farthest from the Earth.
B.The straight-line configuration of three celestial bodies in a gravitational system.
C.The wobble of the Moon as it orbits Earth.
D.The path of totality during a solar eclipse.
Download the worksheet for Earth and Space - Phases of the Moon and Eclipses to practice offline. It includes additional chapter-level practice questions.