5 Week TEST REVIEW WORKSHEET
John left his home and walked 3 blacks to his school, as shown in the accompanying graph. What is one possible interpretation of the section of the graph fro point B to C?
(1) John arrived at school and stayed throughout the day. (2) John waited before crossing the busy street. (3) John returned home to home to get his math homework. (4) John reached the top of a hill and began walking on level ground. Answer: (2)
An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 20.0mL. The height of the water rose to 30.2mL. If the mass of the stone was 25.9mL, what was its density?
2.45mL
Volume of ball.
25mL because, 65mL-40mL
Volume in the graduated cylinder without ball.
40mL
Volume in the graduated cylinder with ball.
65mL
What is a hypothesis and why do we use them?
A hypothesis is an educated guess about the outcome of an experiment.
If 45% of your classmates students live in Imperial Oaks, 25% live in fox run, and 20% live in spring trails, and 10% live in other neighborhoods, what type of groan would you use to show this data?
Circle graph.
Name 3 things that a qualitative observation might include.
Color, smell, touch, and other senses.
Bar Graph
Compares items or categories.
What is the density of an object with a mass of 20 grams and a volume 7 ml?
Density= mass/volume. 20/7=2.9 g/mL.
DRY MIX
Dependent Responding Y-axis Manipulated Independent X-axis
An airplane is descending to land at the airport. During its descent it and to fly in circles until the landing was cleared of other planes. Explain what is occurring during each of the segments.
From A to B it is descending. B to C it is at the same distance. C to D it is descending.
Jen left her house and drove to school in the morning, as shown in the accompanying graph. On her drive to school she realized that she forgot her book bag and had to return home before driving back to school for a 3 hour class. Explain what is happening and during each part of the graph below.
From A to B she is driving to school. B to C going home. C to D going back to school. D to E she is R school.
Is this an inference or observation:
I see a bird is sitting on a tree branch. Observation.
A block of wood 3.0 cm on each side and has a mass of 27g. What is the density of this block?
Length x width x height. 3 x 3 x 3= 27 cm. 27cm / 27g= 1g/mL.
A NASCAR driver races his car around the track each day for a week and records the time. What kind of graph would we use to display this data?
Line graph
Line Graph
Shows a change in data over time.
Circle Graph
Shows percentages.
Inference or Observation
The bird must have flown up to that branch. Inference.
Inference or Observation
The cat want to eat the bird. Inference.
What is the dependent variable?
The dependent variable is always on the bottom of a graph. The dependent variable is what you observe in an experiment.
What is the independent variable?
The independent variable will be always on the left side of the graph. The independent variable always changes or manipulates.
Inference or Observation
There is a cat under the tree. Observation.
A scientist asks a group of students from York Junior High to listen to loud rock music each night while studying to see how it affects their grades.
What is the independent variable? Loud rock music What is independent variable? Grades Name a constant variable in this experiment. Asked test, song, time, etc.
