SCI Scientific Investigation_KES

Transcription

1 SCI Scientific Investigation_KES [Exam ID:0AJF30] Scan Number: Which statement is a prediction? A The frog stayed on the log for 4 minutes. B The frog has stripes. C The frog will jump off the log. D The frog likes a warm, moist environment. 2 Which statement is a conclusion? F The horse is brown with white spots. G The horse will jump if a loud noise is made. H The horse ran faster when he was fed a healthier diet. J The horse has a long, braided tail. 3 Which item is an observation? A Our neighbors are probably going to move. B It should rain at least 2-3 inches by tomorrow. C This plant grew 1/4 inch in one week. D Those kids will get into trouble. 4 The factor that changed as a result of what the experimenter altered is called the F independent variable G dependent variable H constant J control

2 5 How are the animals in Box A different than the animals in Box B? A The animals in Box A have tails. B The animals in Box A live on land. C The animals in Box A have hard shells. D The animals in Box A live in water. 6 What height can be predicted for day 6? F 6 cm G 4 cm H 12 cm J 10 cm

3 7 A student recorded how many commercials she saw in one week. What can be inferred about Monday? A The TV shows were cut short on Monday. B She watched less TV on Monday. C She watched more TV on Monday. D There were longer TV programs on Monday. 8 A student made a list of observations of an animal in the school yard. Which observation is quantitative? F 6 G 8 H 9 J 3

4 9 What part of the experiment is purposely changed by the person doing the experiment? A Independent variable B Constant C Control D Dependent variable 10 A student gave a popular brand of crayons to her 4th grade class. She gave the same amount of store brand crayons to the 4th grade class next door. After doing 5 coloring projects each, she compared the crayons from each class. What was the dependent variable? F Number of coloring projects G Brand of crayons H Amount of crayons used J 4th grade class

5 11 A boy picked a toy from the toy store. It was covered with fur. It had four legs and a long nose. Which toy did the boy most likely pick? A B C D 12 A student's science fair project tested which brand of microwave popcorn had the fewest unpopped kernels. What is the independent variable? F The brand of popcorn G The size of the bag of popcorn H The microwave that was used J The cooking time of the popcorn

6 13 To test which size ball would roll down a hill the fastest, all the variables would have to be the same EXCEPT A the height of the hill B how big the ball is C how hard the ball is pushed D the surface of the hill 14 A science class wanted to know if an empty wagon and a wagon full of books would roll down a ramp at the same speed. Which ramps should the students build to perform a fair test? F G H J 15 Which of the following is a hypothesis? A How can I be a better reader? B My reading scores improved after just one month. C If I read 10 minutes a day, then I will become a better reader. D By reading 10 minutes a day, I was able to increase my reading scores.

7 16 Which statement best shows a cause and effect relationship? F People like using the extra sets of flippers at the pool. G What stores sell swimming gear such as flippers? H Flippers do not have to fit a foot exactly to still be useful. J If a person uses flippers, then they can swimmer faster. 17 How far did the car roll on sandpaper? A 30 cm B 40 cm C 20 cm D 60 cm 18 A student did an experiment with kites. She had to measure the string on each kite before the experiment began. Which tool would be best for her to use for her experiment? F magnifier G balance H measuring tape J eye dropper

8 19 What can be inferred from the picture? A The person lives in a wooded area. B The person is trying to build a tree house. C The person enjoys being outdoors in the summer time. D The person is trying to see into the neighbor's yard. 20 By looking at the graph, what is the dependent variable? F Line graph G Types of animals H Forest population J Number of animals