Science 9 Unit E Topic 1 Review

The heliocentric model suggests that

• the earth is at the centre, with the moon, sun, and planets orbiting around it.

• planets revolve around the sun in an elliptical pattern

• planets revolve around the sun in a circular pattern.

• the moon is at the centre, with the earth, sun, and planets orbiting around it.

Jupiter has a rotational period of 9.8 hours. What is Earth's rotational period?

• 365 days

• 12 hours

• 24 hours

• 1 year

The terms azimuth and altitude are associated with determining the

• distance to the stars and planets

• location of the stars and planets

• brightness of the stars and planets

• composition of the stars and planets

Unmanned vehicles launched into space in order to carry out remote sensing and collect data called

• space probes

• space shuttles

• space stations

• space laboratories

Small bodies orbiting around a planet are called

• asteroids

• satellites

• galaxies

• nebulae

The first four planets from the Sun are called the inner planets. The four planets that are furthest from the Sun are called outer planets. Which of the tables shown lists some of the key characteristics that distinguish outer planets from inner planets in our solar system?

• 
• 
• 
• 

Sally is facing south on March 21 and is trying to find the coordinates of the Sun as it sets. Which of the following coordinates most likely describe the location of the Sun?

• Altitude 85° and azimuth 90°

• Altitude 5° and azimuth 270°

• Altitude 5° and azimuth 90°

• Altitude 85° and azimuth 270°

Constellations consist of patterns of stars in the sky. The constellations we recognize today were identified by many ancient civilizations. Which of the following statements best explains why planets are never featured in

constellations?

• Planets look bigger than stars.

• Planets are more difficult to see than stars.

• Planets have a chemical composition different from that of stars.

• Planets do not maintain fixed positions relative to other planets or stars.

Appears as a streak in the sky.

• asteroid
• meteoroid
• comet
• meteor

What is an asteroid?

• rocky, metallic bodies that orbit the sun
• a mixture of ices
• a dwarf planet
• a chunk of stony matter