L1 The Structure of the Solar System

The shape of a planet’s orbit is a(n) _____________.

• circle

• ellipse

• square

• triangle

The time it takes an object to SPIN once is called its _____________.

• period of rotation

• frequency of spin

• angular velocity

• time of revolution

The Sun and the objects that orbit it make up the _____________.

• galaxy

• solar system

• universe

• nebula

What is the center of the solar system?

• The Sun

• The Earth

• The Moon

• Jupiter

What are the two main types of planets in our solar system?

• Gas giants and rocky planets

• Inner planets and outer planets

• Dwarf planets and moons

• Terrestrial planets and ice giants

Name the four inner planets.

• Mercury, Venus, Earth, Mars

• Jupiter, Saturn, Uranus, Neptune

• Earth, Mars, Jupiter, Saturn

• Mercury, Venus, Earth, Jupiter

What is the main difference between inner and outer planets?

• Inner planets are primarily composed of ice, while outer planets are rocky.

• Inner planets are gas giants, while outer planets are rocky.

• Inner planets are rocky, while outer planets are gas giants.

• Inner planets have more moons than outer planets.

How does the mass of an object affect its gravitational pull?

• The more mass an object has, the stronger its gravitational pull.

• The mass of an object has no effect on its gravitational pull.

• Lighter objects have a stronger gravitational pull than heavier objects.

• Gravitational pull is only affected by distance, not mass.

What is gravity?

• A force that repels two bodies away from each other.

• A force that attracts two bodies towards each other.

• A type of energy that powers the universe.

• A phenomenon that causes objects to float in space.

Why is the SUN's gravitational force so strong?

• It has more MASS than any other object in the solar system.

• It is the largest star in the universe.

• It is located at the center of the Milky Way galaxy.

• It has a higher temperature than other celestial bodies.