Science Chapter 9 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

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Presentation transcript:

Science Chapter 9

Choice1Choice 2Choice 3Choice

Row 1, Col 1 Force A push or a pull

1,2 position The location of an object

1,3 newtons The unit used to measure pushes and pulls

1,4 A change in position motion

2,1 How fast an object moves over a certain distance speed

2,2 The length between two places distance

2,3 A force that occurs when one object rubs against another friction

2,4 weight The measure of the pull of gravity between an object and the Earth

3,1 A pulling force between two objects, such as Earth and you gravity

3,2 A unit of measurement in the English system pound

3,3 Scientists measure weight in this newtons

3,4 gravity Things fall to Earth because they are pulled by Earth’s _________.

4,1 C A B C D In which picture has the symbol changed direction?

4,2 Julie Who ran the race in the shortest time?

4,3 Why is it hard to skate on a gravel road? The gravel increases friction.

4,4 speed You need time and distance to measure ______.

5,1 If an adult runs 4 miles in an hour, how far will he run in an hour and a half? 6 miles

5,2. Since the beach ball is larger than baseball, it has more surface area. Friction from the wind keeps the beach ball from going as far as the baseball. The weight of the ball also affects the distance because it would add allow the ball to have more force to resist friction and gravity. Josh goes to the beach. He throws a baseball. It travels 25 feet. He throws a beach ball. It travels 5 feet. Why does the large beach ball travel less than the baseball?

5,3 If you are in outer space, and you throw a beach ball, how far will it travel? The beach ball will keep going until it is slowed down by friction from the air or pulled down by gravity.

5,4 You hypothesize that your new pair of skates is faster than your old pair. How can you test your hypothesis? You must test each pair the exact same way. You must go the same direction on the same course for the same distance. You must use the same amount of force. The weather and wind should be the same. You must time how long it takes to finish the course wearing each pair of skates.