Prepositions  Read p. 362-367

 

Exercise 1 Circle the prepositions in each sentence below.

 

1. NASA sent the first satellite beyond Earth’s atmosphere.

 

2. It moved in an orbit around Eath.

 

3. Scientists gathered measurements of the satellite’s orbit.

 

4. From these measurements, the found that Earth is slightly pear-shaped.

 

5. The satellite transmitted messages for 6 years.

 

Exercise 2 Circle the prepositions in the sentences below and underline the object of the preposition. Draw an arrow to the word the prepositional phrase modifies.

 

1. Mars is the fourth planet from the sun.

 

2. For 687 Earth days Mars revolves around this giant star.

 

3. Two moons revolve around the planet.

 

4. Deimos orbits Mars once in thirty hours, while Phobos orbits in only eight hours.

 

5. The surface of Mars is red and rusty.

 

Exercise 3 In each of the following pairs of sentences, one sentence contains a word used as a preposition and the other contains the same word used as an adverb. Find the word that appears in both sentences. If the word acts as a preposition, circle the preposition. If the word acts as an adverb, underline it.

 

1. Pieces of asteroids that pass through Earth’s atmosphere are called meteors. They are called meteors only when they are passing through.

 

2. Once they land on the ground they are called meteorites. Eager to examine the meteorite, the scientist switched the electron microscope on.

 

3. Meteors rain down every day somewhere on Earth. Sometimes, people climb down the craters that were created by meteorites.