LH

Unit 2: Asteroids, Comets, Meteors

Multiple Choice Questions

  1. What force keeps planets in orbit around the sun?

    A) Magnetism

    B) Gravity

    C) Friction

    D) Electric Force

  2. Which of the following is an example of inertia?

    A) A planet moving in a straight line when no force acts on it

    B) A rocket pushing off the ground

    C) A ball rolling to a stop

    D) An asteroid being pulled into the sun

  3. What happens to the gravitational force between two objects if the distance between them increases?

    A) It increases

    B) It decreases

    C) It remains the same

    D) It disappears

  4. Which force is responsible for a comet's tail pointing away from the sun?

    A) Gravity

    B) Electrostatic Force

    C) Solar Wind

    D) Friction

  5. What is the primary force acting on meteoroids as they enter the Earth's atmosphere?

    A) Buoyancy

    B) Gravity

    C) Tension

    D) Magnetic Force

Fill-in-the-Blank Questions

  1. The force that attracts two bodies toward each other is called __.

  2. The path that a planet takes as it revolves around the sun is known as its __.

  3. A __ is a small rocky body that orbits in space, primarily between Mars and Jupiter.

  4. Gravity assists in the formation of __, which are maintained by gravitational forces.

  5. The term __ refers to the resistance an object has to any change in its motion.

Open-Ended Question

  1. Explain how gravity affects the movement of planets and other celestial bodies in space. Provide at least three examples in your response.

Answer Key

Multiple Choice Questions

  1. B

  2. A

  3. B

  4. C

  5. B

Fill-in-the-Blank Questions

  1. gravity

  2. orbit

  3. asteroid

  4. planets

  5. inertia

Open-Ended Question

  1. Gravity is a force that pulls objects toward one another. It keeps planets in their orbits around the sun, causing them to move in a predictable path. For example, the Earth's gravity pulls it towards the sun, keeping it in orbit. Additionally, gravity holds moons in orbit around their planets, such as the moon revolving around Earth. Finally, gravity influences comets as they swing close to the sun, where they are pulled by its gravitational force, resulting in their characteristic tail pointing away from the sun.

Notes

    Ensure that students understand key concepts related to gravity, inertia, and the behavior of celestial bodies in space. Encourage group discussions around forces in space to help reinforce learning.

Use visuals or diagrams to illustrate concepts of gravity and orbits during the lesson.