EGYPTIAN AMERICAN INTERNATIONAL SCHOOL Elementary Science Department TERM 4 GRADE 4 A. Match using letters: Revision 1. Weather ( ) 1. Is too little precipitation. 2. Humidity ( ) 2. Is the condition of the Atmosphere at a given place and time. 3. Air pressure ( ) 3. Falls in the form of rain, hail, snow or sleet. 4. Precipitation ( ) 4. Is the movement of air. 5. Wind ( ) 5. Is the amount of water vapor in the air. 6. Clouds ( ) 6. Is the weight of the atmosphere pressing down on the Earth s surface. 7. Drought ( ) 7. Forms as water vapor cools and condenses. 1 P a g e
B. Fill in the blanks: 1. Temperature 2. Humidity 3. Distance Low temp. High humidity Top of mountain --------- air pressure ---------- air pressure -------- air pressure High temp. Low humidity Base of mountain ---------- air pressure ---------- air pressure ---------- air pressure C. Complete each sentence below by stating whether air pressure decreases or increases: 1. You are climbing a mountain. As u climb, air pressure is ------------------------. 2. In the morning the air is dry. In the afternoon, the air feels very moist. Air pressure is ----------------------. 3. A warm day has changed to a cold afternoon. Air pressure is -----------------------. 2 P a g e
D. Answer the following: 1. In the morning while you are relaxing on the beach you feel a very freshening cold air while at night you feel a warm breeze of air. Explain clarifying the names of the two phenomena. In the morning At night 2. How would wind be different if the sun heated the Earth s surface evenly? 3 P a g e
3. 4.What is the difference between a cold front and a warm front? Warm front Cold front 4 P a g e
E. Identify each weather instrument AND what it measures: Name: ---------------- Measures: ----------------- Name: ---------------- Measures: ----------------- Name: -------------------- Measures: ------------------- Name: -------------------- Measures: ------------------ Name: ------------------ Measures: ------------------ 5 P a g e
F. Fill in the blanks using words from the box below: Ground water Condensation Water cycle Atmosphere Precipitation Run off Glacier Transpiration Water vapor Evaporation 1. --------------------- is the changing of water from liquid to a gas. 2. ------------------ is water as a gas. 3. A thick sheet of slowly moving ice is called a -------------------- 4. ------------------ is water that cannot soak into the ground and instead it flows across Earth s surface. 5. Water that is stored underground is called -------------------- 6. Mixture of gases that surrounds Earth s surface is called --------------------------- 7. Clouds are formed by ---------------------- where water is changed from gas to a liquid. 8. ----------------------------- is the process in which plants return water vapor to the atmosphere. 9. ------------------------ is the movement of water from the Earth s surface to the atmosphere and back again. 10. The water falls back to earth in the form of rain, hail, snow or sleet and this process is called -----------------------. 6 P a g e
Air mass- front- meteorologist-warm-cold-weather forecast 11. A --------------------------- is a scientist who studies weather. 12. An ----------------- is a large body of air with the same temperature and humidity throughout. 13. A -------------- is the boundary between two air masses. 14. A -------------- front forms where a cold air mass bumps into a warmer air mass. 15. A -------------- front forms where a warm air mass moves over a cold air mass. 16. A ----------------- is a prediction about the future weather conditions of a place. Moist-dry-warm-cold An air mass reflects the conditions of the place where it forms. 17. Air masses that form over land are. Air masses that form over water are. 18., dry air masses form near the poles, and, moist air masses form near the tropics. 7 P a g e
G. Label the diagram below: H. Choose the correct answer: 1. Bridget notices gray, low clouds moving in to cover much of the sky. Which kind of cloud is she observing? A. thunderclouds B. stratus C. cirrus D. cumulus 2. In which of the following places would the air pressure be highest? A. in a cloud B. on a hilltop C. on a mountaintop D. at the bottom of a valley 3. Damien says, The air feels very dry today. Which of the following weather factors is he describing? A. air pressure B. humidity C. precipitation D. wind speed 8 P a g e
4. Which of the following is the main cause of winds? A. high humidity B. difference in air pressure C. lack of precipitation ( no precipitation) D. temperature differences 5. Juanita watches a rain puddle as she plays outside. The figure below shows how the puddle changes while Juanita observes it during the day. What process is Juanita observing? A. condensation B. evaporation C. precipitation D. runoff 6. Lila observes that the sky is covered with a sheet of thick, gray clouds. What kind of weather is most likely to occur? A. rainy B. sunny C. very cold D. windy 9 P a g e
7. Which of these processes form clouds? A. water vapor expands as it rises B. solid water evaporates C. Liquid water freezes D. water vapor rises and condenses 8. Which form is water in when it is water vapor? A. gas C. liquid B. heat D. solid 9. Cherry s mom is getting ready to cook pasta. When the water boils, which process will occur? A. condensation C. melting B. evaporation D. precipitation. 10. The following diagrams show the formation of air masses over different areas. Which air mass contains warm, moist air? a) b) c) d) 11. Evan watches the weather report on the news. The announcer states that an air mass formed over a tropical ocean is moving into the area where Evan lives. Which type of weather can Evan expect? A. cold and dry B. warm and dry C. cold and wet D. warm and wet 10 P a g e
12. Deanna measured the temperature and humidity every afternoon for 4 days. She recorded the results in the following table. Day Temperature ( F) Humidity (%) Monday 82 90 Tuesday 81 79 Wednesday 75 70 Thursday 82 69 Which day could Deanna conclude was the most hot and humid? A. Monday B. Tuesday C. Wednesday D. Thursday 13. Antonio observes the weather one afternoon. He concludes that thunderstorms are likely. Which observation best supports his conclusion? A. There is a light wind. B. The temperature is 75 F. C. The winds are blowing from the east. D. The clouds are mainly cumulonimbus. I. Arrange the stages of the water cycle below: Condensation Evaporation Precipitation Water is heated by the sun 11 P a g e