1) The most important lab safety rule is a.always wear a lab apron. b.never wear safety goggles. c. create and do your own experiment without Mr. Pham's.

1) The most important lab safety rule is  

a. always wear a lab apron.

b. never wear safety goggles.

c. create and do your own experiment without Mr. Pham's approval.

d. always follow Mr. Pham's instructions exactly.

2) Science is a way to study 

a. what people think.

b. all natural and physical things around us.

c. computers.

d. how to dissect animals.

3) Earth scientists do not study 

a. rocks.

b. volcanoes.

c. how living things interact.

d. the human body.

4) The part of the Earth system that includes Earth's solid, rocky, outer layer (land) is the 

a. atmosphere.

b. biosphere.

c. hydrosphere.

d. geosphere.

5) What is a balance used to find?

a. Hardness

b. Volume

c. Density

d. Mass

6) What are the lengths of the beetle, spider, and grasshopper, respectively?

a. 3 cm, 4 cm, 5 cm

b. 3 cm, 5 cm, 5 cm

c. 3 cm, 5 cm, 6 cm

d. 4 cm, 4 cm, 5 cm

7) Which of the followings is NOT part of the design cycle (problem solving process)?  

a. Investigate (idea)

b. Plan (write)

c. Create (make)

d. Present (share)

8) Beakers and graduated cylinders are used to- 

a. measure air pressure, temperature, and humidity

b. measure liquid volume and store liquid solutions or chemical

c. calculate how to mix liquids

d. store samples collected during field work

9) Which hypothesis is supported by the data shown in the graph?

a. Red light stops the growth of plants.

b. Green light makes plants grow tallest.

c. Color of light affects plant growth.

d. Plants grow best when exposed to all colors of light at once.

10) Angelica hypothesizes that cutting down trees causes topsoil erosion. Which evidence would best support this hypothesis?

a. Showing that cutting down trees reduces the number of animals in a forest

b. Finding a place with no trees that has little or no topsoil

c. Demonstrating how topsoil washes away without tree roots to hold it in place

d. Locating a forest with lots of trees that has lots of topsoil

11) In Science, a hypothesis must be  

a. testable.

b. correct.

c. changed.

d. controlled.

12) Alice is conducting a science experiment to find out whether the amount of food fed to a young turtle affects its growth. Her hypothesis is that the more you feed a young turtle, the longer it will continue to grow. Which evidence would support Alice's hypothesis?

a. All of the turtles that Alice fed grew for the same length of time.

b. The turtles that were fed more grew bigger faster.

c. The turtles that were fed more had a longer growth period.

d. All of the turtles that Alice fed grew to different lengths.

13) Jessica wants to conduct an experiment to determine if temperature affects how fast plants grow. Which set of instruments would be MOST useful? 

a. Thermometer, barometer

b. Barometer, computer

c. Computer, ruler

d. Ruler, thermometer

14) To observe the cells of an onion, you would use- 

a. a telescope.

b. dissecting equipment.

c. a microscope.

d. a graduated cylinder.

15) Amy wants to observe a small insect she collected from outside. She could use all of the following except a- 

a. telescope.

b. microscope.

c. camera.

d. magnifying glass.

16) What type of observation is displayed by the observation table? 

a. Absolute information

b. Quantitative (measurement)

c. Qualitative (description)

d. prediction

17) The table shows data for the growth of 4 identical plants, each watered with a different amount of a vitamin solution each day. According to the data, which estimate is the BEST prediction of the height of plant 3 after 3 weeks?

a.  10 cmb.  12 cmc.  15 cmd.  Cannot be determined from the data given

18) After concluding that your observations support your hypothesis or your hypothesis is correct, what would you do with that information?

a.  release that information to the radio or TV networkb.  publish it in a magazinec.  present it to a group of peopled.  all of the above

19) What is the process that a scientist use to make a discovery or find an explanation to a problem? 

a. scientific report

b. internet

c. scientific inquiry process

d. a recipe

20) During an experiment, if you change the temperature to see its effect on germination, the different temperatures are called the 

a. experimental variables.

b. responding variables.

c. constant variables.

d. dependent variables.

21 An organized way to collect and record scientific observations is with a(n) 

a. model.b. inference.c. data or observation table.d. experiment.

22) One useful tool that may help a scientist compare numerical data or measurement is a 

a. variable.

b. graph.

c. theory.

d. law.

23) A summary of what you have learned from a scientific experiment (step 6 of the scientific method) is called a(n) 

a. hypothesis.

b. inquiry.

c. conclusion.

d. law.

24) Which of these is the closest in length to a centimeter (cm)? 

a. the length of a person's foot

b. the diameter of a dime

c. the thickness of a penny

d. the length of a football field

25) Which of the following is NOT an Earth scientist? 

a. biochemist

b. oceanographer

c. meteorologist

d. seismologist

26) Which unit would be most appropriate for measuring the mass (weight) of a cow? 

a. cm2

b. kg

c. m2

d. mg

27) A meteorologist studies 

a. meteors.

b. meteorites.

c. the atmosphere .

d. maps.

28) A ___________________ is an informed possible explanation or answer to a question.  

a. hypothesis

b. prediction

c. theory

d. variable

29) After forming a hypothesis, you should 

a. test your hypothesis.

b. ask a question.

c. analyze the results.

d. draw a conclusion.

30) In order to be certain about the conclusions of an experiment, scientists should 

a. keep the number of samples (e.g. pinto beans) in the experiment small.

b. do the experiment only once.

c. have many more samples in the experimental group than in the control group.

d. do the same experiment many times with larger sample size (e.g. more seeds).

31) When scientists find that a hypothesis is incorrect after doing their experiment, they realize that 

a. the experiment was a waste of time.

b. they did the experiment wrong.

c. they have eliminated one possible answer or factor.

d. they must perform the experiment again until it works out the way they think it should.

32) How many meters are in a kilometer? 

a. 10

b. 100

c. 1,000

d. 10,000

33) The last part of the scientific inquiry report format is 

a. the introduction.

b. the procedure.

c. the conclusion.

d. the works-cited and acknowledgement.

34) Useful scientific predictions are important, because 

a. they can save lives and money.

b. they tell us about the future accurately.

c. it's fun to make a forecast.

d. the experiment will work better.

35 The diagram shows a cross section of a hill. According to the diagram, what is true? 

a. Layer A is the same material as Layer B.b. Layer A formed after Layer B.c. Layer A took less time to form than Layer B.d. Layer A is less dense than Layer B.

36)

This is a piece of petrified wood. What historical event does this evidence support or explain? 

a. A tornado happened here.

b. A big earthquake happened here.

c. A meteor fell here.

d. A volcano erupted close by.