Science Test On Space 4th Grade

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Questions: 17 | Attempts: 6,514 | Updated: Oct 21, 2024

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Fourth grade Earth Science activities are aimed at helping student understand how the Earth works, from weather. We have learnt a lot about the sun, moon and surrounding planets. Take up the quiz below and get to learn more about space and what exists around earth. All the very best!

Questions and Answers

1.

A ______________________ is a large body of matter moving around the sun.

Explanation
A planet is a large body of matter that orbits around the sun. It is one of the celestial objects in our solar system and is characterized by its spherical shape and its ability to clear its orbit of debris. Planets are held in place by the gravitational force of the sun and are essential components of our solar system.

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2.

An _______ is a n imaginary line that runs through both poles in the earth.

Explanation
The correct answer is "axis". An axis is an imaginary line that runs through both poles in the earth. It is the line around which the earth rotates, causing day and night. The axis also determines the tilt of the earth, which is responsible for the changing seasons.

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3.

The ____________ is a small planet-like body that orbits the earth.

Explanation
The moon is a small planet-like body that orbits the earth. It is the Earth's only natural satellite and is the fifth-largest moon in the solar system. The moon plays a significant role in various aspects of our lives, including tides, lunar cycles, and even cultural and religious beliefs. Its gravitational pull affects the Earth and its inhabitants, making it an essential celestial object in our solar system.

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4.

The stages of the moon's cycles is called __________________.

Explanation
The stages of the moon's cycles are referred to as moon phases. These phases include new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and waning crescent. The moon phase is determined by the positions of the Earth, moon, and sun, which cause different amounts of the illuminated portion of the moon to be visible from Earth.

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5.

Solar means ________.

Explanation
Solar means sun. The term "solar" is derived from the Latin word "sol," which means sun. It is commonly used to describe anything related to or powered by the sun, such as solar energy, solar panels, or solar power. The word "solar" is often used in scientific, technological, and environmental contexts to refer to the sun and its energy.

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6.

Lunar means _______________.

Explanation
The word "lunar" is derived from the Latin word "luna" which means moon. Therefore, when we say "lunar," we are referring to something that is related to or associated with the moon.

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7.

When we are seeing more and more of the moon, it is _____________.

Explanation
When we are seeing more and more of the moon, it means that the illuminated portion of the moon is increasing. This phase is known as waxing.

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8.

When we are seeing less and less of the moon it is, __________.

Explanation
When we are seeing less and less of the moon, it is called "waning." The moon goes through a cycle of phases, and during the waning phase, the visible portion of the moon decreases each night after the full moon until it becomes a new moon.

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9.

The _______ is the center of the solar system.

Explanation
The sun is considered the center of the solar system because it is the largest object in the system and exerts the most gravitational force. It contains more than 99% of the total mass of the solar system and its gravitational pull keeps all the planets, moons, and other objects in orbit around it. The sun also emits light and heat, providing energy for life on Earth and driving the processes that occur within the solar system.

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10.

The sun is made up of superheated gases, mostly _________________ and _________________.

Explanation
The sun is primarily composed of two gases, helium and hydrogen. These gases are superheated to extremely high temperatures, causing the sun to emit light and heat. Helium is the second most abundant element in the sun, while hydrogen is the most abundant. These gases undergo nuclear fusion reactions in the sun's core, releasing vast amounts of energy in the form of light and heat.

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11.

The ______________ is the largest object in our solar system.

Explanation
The sun is the largest object in our solar system. It is a massive ball of hot, glowing gas that provides heat and light to all the planets and other celestial bodies in its gravitational pull. Its immense size and mass make it the dominant force in our solar system, exerting its gravitational pull on all other objects. The sun's size is so vast that it could fit over a million Earths inside it. Its enormous size and energy output make it the largest and most important object in our solar system.

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12.

If a planet is too far away to be seen with a telescope, scientists send special spacecraft into space called________________.

Explanation
Scientists use special spacecraft called probes to explore planets that are too far away to be seen with a telescope. Probes are designed to collect data and perform experiments on these distant planets, providing valuable information about their composition, atmosphere, and other characteristics. By sending probes into space, scientists can gather data and expand our knowledge of the universe beyond what is visible from Earth.

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13.

It takes Earth _______________ to rotate one complete time on its axis.

Explanation
Earth takes 24 hours to rotate one complete time on its axis. This is known as a day. The rotation of Earth causes the cycle of day and night, with half of the planet facing the Sun at any given time. The concept of a 24-hour day is based on the division of Earth's rotation into 24 equal parts, each lasting an hour. This measurement of time is widely used and forms the basis of our daily routines and timekeeping systems.

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14.

It takes Earth ________________ to revolve, orbit, around the sun.

Explanation
Earth takes 365 days to revolve around the sun. This is known as a year.

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15.

The __________ is the rise and fall of the water in the ocean caused by the gravity forces from the moon.

Explanation
Tide refers to the rise and fall of the water in the ocean caused by the gravitational forces from the moon. The moon's gravitational pull creates a bulge in the ocean, causing a high tide, while the opposite side of the Earth experiences a low tide. As the Earth rotates, different parts of the ocean are affected by the moon's gravity, resulting in the regular pattern of tides.

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16.

Name the planets in order they are from the sun.

Explanation
The given answer lists the planets in order of their distance from the sun. Starting with Mercury, which is the closest planet to the sun, and ending with Neptune, which is the farthest planet from the sun. This order is based on the planets' respective orbits around the sun, with each planet being further away from the sun than the previous one.

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17.

Which planet is situated between Earth and Jupiter?

Explanation
Mars is the planet that sits between the Earth and Jupiter.

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Sep 20, 2010

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Science Test On Space 4th Grade

A ______________________ is a large body of matter moving around the sun.

An _______ is a n imaginary line that runs through both poles in the earth.

The ____________ is a small planet-like body that orbits the earth.

The stages of the moon's cycles is called __________________.

Solar means ________.

Lunar means _______________.

When we are seeing more and more of the moon, it is _____________.

When we are seeing less and less of the moon it is, __________.

The _______ is the center of the solar system.

The sun is made up of superheated gases, mostly _________________ and _________________.

The ______________ is the largest object in our solar system.

If a planet is too far away to be seen with a telescope, scientists send special spacecraft into space called________________.

It takes Earth _______________ to rotate one complete time on its axis.

It takes Earth ________________ to revolve, orbit, around the sun.

The __________ is the rise and fall of the water in the ocean caused by the gravity forces from the moon.

Name the planets in order they are from the sun.

Which planet is situated between Earth and Jupiter?

The sun is made up of superheated gases, mostly _ and _.