form 2 science chapter 13 Meteroid, asteroid and comet

What is meteroid?

• large rocky and metal objects in the solar system that orbits the Sun

• a small metallic stone which is floating in outer space

• rocky objects made up of a mixture of gas, ice and frozen dust that travel around the Sun

Which of the following is true about comet?

• It revolves around the Sun in its own orbit

• it is fragment of rock

• it is large rock

Which of the following correct about asteroid?

• it consists of mixture of ice, gas, dust and small rocks

• It is found in the Earth

• It orbits the Sun

Which of the following is correct about meteor?

• it known as shooting star

• it orbits the Sun

• it is floating in outer space

Which of the following is used to measure the impact hazard of an object that can endanger or hit the Earth?

• Toronto scale

• Torino scale

• Toritos scale

If asteroids and meteoroids hit the Earth, which would have the biggest impact on the earth?

• asteroids

• meteoroids

What's the difference between comets and asteroids?

• Asteroids are made of metal and rock, while Comets are ice and rock

• Asteroids are made of ice and rock, while Comets are made of metals and rock

• There is no difference

• Asteroids are made of stardust, while Comets are made up of water

What's the difference between meteoroid, meteor, and meteorite?

• Meteoroids are sand size, meteors are streaks of light in the sky, and a meteorite is the meteors that has landed

• Meteoroids are huge, Meteors are the pieces that land, and Meteorites are shooting stars

• There are no differences

• Meteoroids are small, Meteors are another name for comets, and Meteorites are shooting stars

What is the composition of most Comets?

• Rock, Ice, Salt, Carbon

• Rock, Ice, Magma, Frozen Gases

• Ice, Dust, Rock, Frozen Gases

• Ice, Dust, Rock, Soil

What causes Meteoroids to burst into flames upon entering the Earth's Atmosphere?

• They are made out of flammable materials

• They cannot handle the pressure of Earth

• They do not burst into flames, they only reflect the Sun's light

• Friction from the Earths atmosphere

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