Assessment Task 1 Revision

Question 1

In an experiment, the variable that is changed is called the…..

Answer 1

Independent Variable

Question 2

What is the general format for writing a scientific hypothesis?

Answer 2

If ……………., then……………………

Question 3

In an experiment, variables that are kept constant and remain the same are called

Answer 3

Control variables

Question 4

In an experiment, the variable that is measured, observed, or recorded is the……

Answer 4

Dependent variable

Question 5

What is a hypothesis?

Answer 5

Based on your background information, what you THINK or PREDICT will happen in an experiment

Question 6

In an experiment, variables are controlled (kept the same) because?

Answer 6

It makes the experiment valid and it makes the experiment a ‘fair test’.

Question 7

When measuring the volume of water in a measuring cylinder, is the volume read from the top or bottom of the meniscus?

Answer 7

Bottom of the meniscus.

Question 8

An inference is…….

Answer 8

What you think has happened (based on your observations)

Question 9

The steps you follow to conduct an experiment is called?

Answer 9

The Method

Question 10

An observation is…..

Answer 10

The use of one of the five senses to gather information - what you see, feel, hear, taste, smell.

Question 11

The rules for scientific diagrams are…

Answer 11

• Use a pencil and ruler.
• Draw objects in proportion to each other.
• Always draw in 2D.
• Do not sketch lines.
• Label lines should be ruled horizontally and not have arrowheads.
• Give the diagram a descriptive heading.

Question 12

When constructing a graph, the independent variable goes on which axis?

Answer 12

The x-axis (horizontal)

Question 13

Rules for constructing tables in science are….

Answer 13

• Ruled and enclosed.
• Independent variable in the left column.
• Columns must have headings and include units of measure.
• Cells only contain data (not units of measure).
• The table should have a descriptive heading that includes the independent and dependent variables.

Question 14

What should be included in an experiment’s conclusion?

Answer 14

• If the hypothesis is correct (proven) or incorrect (not proven).
• The relationship between the independent and dependent variables.

Question 15

How do you calculate the average?

Answer 15

Add all numbers together and then divide by how many numbers you added.

Question 16

When constructing a graph, the dependent variable goes on which axis?

Answer 16

The y-axis (vertical)

Question 17

An observation that refers to features/uses words to describe it is called….

Answer 17

a Qualitative observation

Question 18

The rules for constructing scientific graphs are…

Answer 18

• Use a sharp pencil.
• Rules the x and y-axis.
• Label the axis ( independent variable on the x-axis and the dependent variable on the y-axis) and include units of measure.
• Prepare an even, linear scale for each axis.
• Plot data points in pencil with an ‘+’.
• Rule or draw (if a curve) a line of best fit.
• Give the graph a descriptive heading that includes the independent and dependent variables.

Question 19

An observation that refers to numerical data/numbers is called…..

Answer 19

a quantitative observation

Question 20

What is the average of the following data set?

55, 65, 53, 57

Answer 20

57.5