Semester Exam Review
6th Grade Science
1.
When dealing with unlabeled beakers filled with clear liquid at your lab station, what is one
safety precaution you should do?
What does the SI System of Units stand for?
2. What type of situation requires the use of safety goggles?
3. What types of liquid should you waft in the lab?
4. If a 50g of liquid occupy a space of 5ml, what is the density of the liquid?
Sponge Bob notices that his pal Gary is suffering from slimotosis, which occurs when the shell
develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing
seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better
cure. Sponge Bob decides to test this cure by rubbing Gary with seaweed for 1 week and having
him drink Dr. Kelp. He also rubbed shell oil on Gary during the week. After a week of
treatment, the slime is gone and Gary’s shell smells better.
5. What is the independent variable of this lab?
6. What is the controlled variable of this investigation?
7. What is the dependent variable of this lab?
8. A Scientist wants to carry out an experiment to learn how acid rain affects living
organisms. Write a hypothesis to this experiment.
9. What type of lab would require the use of a stopwatch and a meter stick?
10. The volume of a marble and water in a graduated cylinder was 50ml. After the marble is
removed, the volume of the water was 20ml. What is the volume of the marble? What
type of measurement is this called?
11. Which types of SI units are used for volume? (3 answers)
12. What types of equipment is used for volume?
13. What measurement, instrument, and unit would you use to measure the amount of matter
in an object?
14. Boiling red cabbage turns water purple. Is this a qualitative or quantitative observation?
15. Centimeters, kilograms, milliliters, grams, liters, meters, are all examples of instruments
or units of measurement?
16. Some students wanted to compare the usable energy of several types of energy used in
heating. Oil 4.5 billion, Coal fired plant .4 billion, Natural Gas 4.9billion. What is the
most effective way for students to show their information?
17. What type of graph would show the speed of a car at different times during a trip?
18. Some students are preparing a report on the solar system. They are researching the
distances from the planets to the sun. What graph would best help them organize their
findings?
19. The independent variable is most often found on which part of a graph? (DRY MIX)
20. Elements cannot be changed into another element by physical or chemical changes? True
or False?
21. What is the difference between and element and a compound?
22. Water is represented by the chemical formula H2O. What does the O represent?
23. What is the smallest quantity of an element?
24. A group of students is determining the density of a solid cube of plastic. What tools
would you use to find the density of the cube?
25. A mixture of sulfur and iron fillings could be separated by using what tool?
26. What does this picture represent?
27. A chemical change is permanent. True or False
28. Give three characteristics of a metal.
29. When a car is on an icy roadway, it is difficult to control its motion due to what?
30. On a motion graph when the line graph is at a plateau it means there is no motion. True or
False? Why?
31. What is the mass shown on this balance?
224.6g
32. Draw a line graph with this set of data. Lap 1 1:40, Lap 2 2:17, Lap 3 1:42, Lap 4
2:08 (Lap Number and Time (min:sec)
33. On a motion graph what best represents constant speed over time? A declining line, a
straight line, or a rising line?
34. David placed a toy car on a flat plastic track. He pushed the car and measured the
distance the car rolled. Trial 1= 12cm with a gentle push. Trial 2=17cm with a medium
push, and Trial 3=23cm with a strong push. What would the length of trial 4 be with
another medium push?
35. A toy car rolls 50 meters in 2 seconds. What is the speed of the toy car?
36. The amount of force used to move an object depends on the object’s _____?
37. A student begins to measure the speed of a ball rolling down a ramp. What is the speed
of the ball if the distance is 20 meters in 5 seconds?
38. A pitcher throws a ball from the pitchers mound to home plate at 80mph. What is this an
example of?
39. Phillip throws a basketball up in the air and through a hoop. Because the ball is acted on
by the force of gravity, what will happen?
40. What causes the most kinetic energy in an object?
41. What causes the most potential energy in an object?
42. A screen door fully stretched represents what type of energy?
43. Draw a hill. Label the greatest amount of potential energy on the hill.
44. Some students are experimenting to test whether a plant needs fertilizer for growth. How
should they treat the control plant in the experiment?
45. Put a number next to each part of the Scientific Investigation from 1 (first thing you
should do) to 4 (last part of the experiment).
Plant identical plants in three planters that are exactly the same, and place each plant in
an area that gets six hours of sunlight daily.
Record the height and number of leaves in each plant.
Give the first plant no liquid fertilizer, the second plant 10ml of liquid fertilizer, and the
third plant 20ml of liquid fertilizer.
Make certain plants receive the same amount of water daily.
46. Which of the following is less dense than water? A glass, a spoon, an Alka-Seltzer
tablet, bubbles
47. What is the density of a rock if the mass is 6 grams and the volume is 2ml?
48. Metals are poor conductors. True or False? Metals are mostly silver-gray in color. True
or False?
49. Rusting is a physical or chemical change?
50. Two liquid substances that form a solid crystal is a physical or chemical change?
51. A silver spoon tarnishing and leaves changing colors in the fall are what type of changes?
52. Ice melting, paper tearing, and glass breaking are examples of what type of changes?
53. What happened in our chemical changes lab when we mixed vinegar and baking soda?
54. What contains only one type of atom? What contains more than one type of atoms?