Among the given planets, which one has the strongest gravitational force?

Which is the correct arrangement of inner planets, from nearest to farthest from the Sun?

Andromeda is the nearest major galaxy to the Milky Way. What type of galaxy is Andromeda?

Which characteristic of a star usually reflects its surface temperature?

What is the smallest size of a star?

Which color of the star has the lowest temperature?

What is the innermost part of the star which functions as a nuclear reactor?

Which part of the Sun is visible during a total solar eclipse?

What solar feature appears as dark areas on the Sun’s surface?

Which is the correct arrangement of Earth’s specific location in the Universe?

How long does it take for Earth to complete one rotation?

Which of the following is not true about Earth’s axis?

What is Earth’s orbital period?

How many phases does Earth’s moon have?

How long is one lunar cycle?

In which phase of the moon does spring tide occur?

When does Summer solstice in Northern Hemisphere start?

What kind of solar eclipse occurs when the moon covers the sun’s center forming an outer ring around it?

If the Northern Hemisphere experiences autumn, what is the season in the southern hemisphere?

Which of the following processes results in the separation of Earth into three layers?

In which stage of Earth formation did scientists assume the formation of moon?

Which is the earliest era on the geologic time scale?

What epoch is Earth currently into?

Which era is known as the Age of Reptiles and Dinosaurs?

Which era is also called the Age of Mammals?

In which era does the Cambrian explosion take place?

Why is the Cambrian explosion a significant event in geologic history?

What happens during a mass extinction?

Which is the largest extinction that took place on Earth?

These are long narrow depressions on the seafloor that form where ocean plates push or subduct beneath the continental plates.

These are cratons where the basement rocks are buried underneath overlying sediments.

Which among the following statements describes plate tectonic theory?

These transfer heat from one place to another by the movement of a fluid like water or even molten rocks.

Which among the following landmasses were formed when two continental plates collided?

According to Alfred Wegener, which among the following is the cause of the movement and drifting of continents toward and apart from each other?

This flows down the slopes of a volcano and then enters a river valley, moves at a great speed and can travel through valleys and flat areas destroying and burying everything in its path.

Volcanoes that have not shown any signs of activity over a long period of time or have not shown any record of eruptions.

Waves that travel through the Earth at the greatest speed. These waves are the first ones to be recorded by a seismograph.

These meteorites have almost equal amounts of silicate minerals. Silicate minerals contain the elements silicon and oxygen, including metals iron and nickel.

Alex noticed that the concrete monument in their town park starts to appear rusty. What kind of chemical weathering could cause this to happen?

Which agent of erosion usually results in avalanche and landslide?

In which stage of fluvial cycle of erosion do rivers flow fast and have high energy?

Which property of a mineral is observed based on how it is able to scratch other minerals?

Which among the given minerals is considered the softest based on Mohs' scale?

Which type of physical weathering involves repeated freezing and thawing of water in cracks or crevices of rocks that cause them to break?

Which type of physical weathering causes rocks and pebbles to have smooth, rounded edges?

What natural cycle is shown in the given diagram?

Which two processes result in the formation of sedimentary rocks?

Which two processes result in the formation of igneous rocks?

Which of the following is NOT an igneous rock?

Which of the following plants have root nodules that contain nitrogen-fixing bacteria?

Which of the following is NOT a form of nitrogen?

Which of the following activities increases the amount of carbon dioxide in the atmosphere?

Which correctly describes evaporation during the water cycle?

Which correctly describes accumulation during the water cycle?

Which of the following is the biggest source of saltwater?

In which of the following is freshwater mostly confined?

Which is the area where saltwater and freshwater meets?

What area underground holds plenty of freshwater?

Which describes the variety of ways liquid moves across the land?

Based on the diagram, how much freshwater is found on Earth?

Where is most freshwater found?

In which of the following is surface freshwater found the least?