Tenses Exercise For Class 10 CBSE With Answers
Fill in the blanks with appropriate tense forms. This grammar exercise is helpful for students of classes 8, 9 and 10.
Tenses exercise for class 10 CBSE
1. New techniques …………………………. (are helping / were helping / helps) scientists to predict how, when, and where major hurricanes ……………………… (will / would / could) occur.
2. Even when scientists ……………………… (can / may / will) figure out where a storm is headed, winds can change at the last minute, ………………………. (carries / carrying / carry) the storm in a new direction.
3. Scientists ……………………………. (predict / predicts / predicted) hurricanes with the help of computer simulations, or models, and knowledge of the past.
4. Scientists ………………………. (are collecting / have been collecting / collect) data about storms for decades.
5. They ………………………… (noticed / have noticed / notice) patterns that suggest what it ……………………….. (is taking / takes / took) for a strong storm to form in the first place.
6. Storms ………………………… (are developing / develop / developed) over tropical waters in different parts of the world.
7. For a hurricane to get ………………………… (organize / organized / organizing), ‘conditions have to be just right’.
8. First, the ocean water ………………………….. (needs / is needing / need) to be warm enough so that the winds can take up evaporated water which rises into the air.
9. As it rises, the vapor …………………………. (cool / cools / cooled) and turns back into liquid. This process ……………………… (release / releases / releasing) heat and it drives the formation of a hurricane.
10. If wind speeds inside the swirling mass ………………………… (reach / reached / have reached) 40 miles per hour, the system ………………………….. (classified / is classified / is classifying) as a ‘tropical storm’, and it gets a name.
Answers
1. New techniques are helping scientists to predict how, when, and where major hurricanes will occur.
2. Even when scientists can figure out where a storm is headed, winds can change at the last minute, carrying the storm in a new direction.
3. Scientists predict hurricanes with the help of computer simulations, or models, and knowledge of the past.
4. Scientists have been collecting data about storms for decades.
5. They have noticed patterns that suggest what it takes for a strong storm to form in the first place.
6. Storms develop over tropical waters in different parts of the world.
7. For a hurricane to get organized, ‘conditions have to be just right’.
8. First, the ocean water needs to be warm enough so that the winds can take up evaporated water which rises into the air.
9. As it rises, the vapor cools and turns back into liquid. This process releases heat and it drives the formation of a hurricane.
10. If wind speeds inside the swirling mass reach 40 miles per hour, the system is classified as a ‘tropical storm’, and it gets a name.
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