The Solar System and The Universe
2 hours ago
mrcamquan
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Preview (20 questions)Show answers
  • Question 1
    30 seconds
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    Q.

    The spinning of Earth on its axis is called revolution.

    answer choices

    True

    False

  • Question 2
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    Q.

    The study of the moon, stars, and other objects in space is called _____.

    answer choices

    Astrology

    Geography

    Astronomy

    Meteorology

  • Question 3
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    Q.

    The strength of the force of gravity between two objects depends on two factors: the masses of the objects and the distance between them.

    answer choices

    True

    False

  • Question 4
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    Q.

    _____ is the amount of matter in an object.

    answer choices

    Mass

    Weight

    Gravity

    Density

  • Question 5
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    Q.

    The force of gravity on an object is known as its ______.

    answer choices

    Weight

    Mass

    Density

    Volume

  • Question 6
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    Q.

    Tides are caused mainly by differences in how much the moon's gravity pulls on different parts of Earth.

    answer choices

    True

    False

  • Question 7
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    Q.

    Which tide is this image showing?

    answer choices

    Spring tide

    Neap tide

  • Question 8
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    Q.

    Which tide is this image showing?

    answer choices

    Spring tide

    Neap tide

  • Question 9
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    Q.

    Only one side of the moon from Earth because _______.

    answer choices

    the moon does not rotate on its axis

    the moon does not revolve around Earth

    the moon rotates faster than it revolves

    the moon revolves once and rotates once in the same period of time

  • Question 10
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    Q.

    What force must a rocket overcome to be launched into space?

    answer choices

    Thrust

    Gravity

    Orbital velocity

    Escape velocity

  • Question 11
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    Q.

    The four inner planets are small and dense and have rocky surfaces.

    answer choices

    True

    False

  • Question 12
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    Q.

    1 astronomical unit is equal to _______.

    answer choices

    the average distance from the Earth to the Sun

    the average distance from the Earth to the moon

    the average distance from the moon to the Sun

    the average distance from Pluto to the Sun

  • Question 13
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    Q.

    If the orbital period is known for a planet, its distance from the Sun can be found.

    answer choices

    True

    False

  • Question 14
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    Q.

    The planets' orbits are elliptical.

    answer choices

    True

    False, circular

    False, spherical

  • Question 15
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    Q.

    How did Johannes Kepler determine a planet's distance from the Sun?

    answer choices

    By using a planet's orbital period

    By using a Earth's orbital period

    By using a planet's moons

  • Question 16
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    Q.

    A planet needs to orbit a star, be big enough that its own gravity shapes it as a sphere, be small enough that it isn’t a star itself, and have cleared its orbit of smaller objects.

    answer choices

    True

    False

  • Question 17
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    Q.

    A dwarf planet needs to orbit a star, have enough mass to be a sphere, not have cleared its orbit of smaller objects, and not be a moon.

    answer choices

    True

    False

  • Question 18
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    Q.

    Pluto is considered a dwarf planet because _______.

    answer choices

    it fails to clear other bodies out of its orbit

    it is too far away from the Sun

    it has too many moons

  • Question 19
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    Q.

    Thus famous was first to discover the principal of gravity..

    answer choices

    Galileo Galilei

    Sir Isaac Newton

    Erwin Schrodinger

    Albert Einstein

  • Question 20
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    Q.

    If you're standing on the top of a mountain and drop a rock, it will fall to the ground, even though the rock is gravitationally attracted to you. Why?

    answer choices

    Earth is larger and has a stronger gravitational pull

    Rocks always fall down

    Centrifugal forces pull the rock to the Earth and that is stronger than your gravitational pull

    None of these

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