Space: Unit Review

Which of the following is a characteristic of a comet?

• It orbits the Earth

• It is larger than the moon

• It has a tail of gas and dust

• It is composed of iron and stone

Why does our star, the Sun, appear larger than other stars?

• Its color

• Its temperature

• How close it is to Earth

• What its made of

Why does the moon appear in different places in the sky, both night and day?

• The moon is sometimes close and sometimes far from us.

• The moon revolves around Earth.

• The moon's axis is horizontal.

• The moon produces its own light.

Why are meteor showers harmless?

• Meteors are microscopic.

• Meteors burn up because of the proximity to the Sun.

• Meteors are made of soft, spongy materials.

• Meteors burn up in the Earth's atmosphere.

If the velocity of an orbiting planet is always a straight line, then what causes them to travel in a curved path?

• Electromagnetic attraction between the planet and the sun.

• Gravitational attraction between the planet and the sun.

• Electromagnetic attraction between the planet and nearby planets.

• Gravitational attraction between the planet and nearby planets.

What best protects astronauts from space hazards such as radiation from the Sun?

• Reflective vests

• Plastic head hear

• Space suits

• Polyethelene shielding

Rocky bodies, of varying sizes, are mostly found orbiting the sun between--

• Mars and Jupiter

• Earth and Mars

• Mercury and Venus

• Neptune and Pluto

Which celestial bodies is closest to Earth?

• Halley's Comet

• The Sun

• The Asteroid Belt

• The planet Venus

Which of the following is true regarding the building of the International Space Station (ISS)?

• Space shuttles transported people and parts to build the ISS.

• Space shuttles provided satellite guidance to the ISS.

• Space shuttles were used to bring the ISS back to Earth for repairs.

• Space shuttles were used to power and fuel the ISS.

What two things determine the amount of gravitational force?

• time and temperature

• height and weight

• color and shape

• mass and distance apart