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4th Grade Science AIMS Review Answer Key

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Helping our world!
#1 Television provides some benefits. What is one way that television has helped people? Television provides important information
#2 What is one of the best ways to conserve natural resources that are used to make a radio? Purchase a used one/ give your old TV away
#3 Electricity to play your radio can be made using renewable or nonrenewable resources.Name 2 resources that are renewable. Sun and Wind
#4 Not every part of the bicycle is needed for it to move. Some parts make it easier or safer to ride. Name a part that is needed to make the bicycle move? Wheels, chain, pedals, gears
#5 A refrigerator uses electricity to create a cold place to store food. What negative impact does refrigerator use have on the environment? It contains toxic chemicals the can harm the environment and takes up space in a landfill.
Shocking but True
#1 Alex looked at an electric toothbrush that had a plug with three metal prongs. Why are these prongs made out of metal? Metal is a conductor
#2 Name 3 things that are considered insulators rubber, wood, cloth, etc. (pretty much anything but metal)
#3 Where is a magnet the strongest? at the poles
#4 An object made using a battery connected to a wire that is wrapped around a nail is called. electromagnet
#5 Draw a picture of a closed circuit. The picture should show a complete loop with an electricity source such as a battery or light switch, wire, and what ever is using the electricity.
Living the Life!
#1 All animals need air to survive. An insect gets air through tiny holes on the sides of its body. A whale breathes through a blow hole. What body part do fish use to breathe? Gills
#2 Ducks live near ponds and lakes. The shape of a duck’s foot helps it swim and walk on muddy ground. Which factor is most important in determining the shape of a baby duck’s foot? the shape of the parent ducks’ feet
#3 Why does a cactus have spines? Protection
#4 Living things are often catagorized by wether or not they have a backbone. Name 2 animals that do NOT have a backbone. Answers will vary. You may have named many different insects or snaks, etc.
#5 Explain what vascular means when referring to plants. Has tubes (that carry water )
A world of change
#1 Sam poured water on a pile of dirt and observed that some dirt eroded from the pile. What question could he test to learn more about erosion? answers may vary-- Example-Do different types of dirt wash away at different rates?
#2 What does weathering mean? to break apart
#3 Scientists claim that the area around the Grand Canyon was once covered by an ocean. What evidence would support their claim? fossils of ocean life
#4 A glacier is a slow moving river of ice. How does a glacier help create soil? It scrapes small particles off large rocks.
#5 What does erosion mean? To carry sediment from one location to another
It's Getting Hot In Here Or Is It?
#1 The general explaination of temperature or conditions in an area is called? Climate
#2 The exact temperature or conditions of a locations atmosphere at one particular time is called? Weather
#3 Name the tool used to measure wind speed. Anemometer
#4 What is the water that lies beneath the ground called? Ground water
#5 Using vocabulary, explain the water cycle. (Draw if you wish but must use vocabulary to describe) Teacher will check answers.
Final Question
Tyrone put two stones in a plastic bottle of water and shook it. After he stopped shaking the bottle, he observed that small pieces of the stones were floating in the water. What is the best prediction he can make based on this observation? If shaking the bottle causes pieces of stones to break off then shaking for a longer amount of time will break off more pieces.