Science - SIS Practicals

Question 1

What is independent variable?

Answer 1

The thing that you change in the experiment.

Question 2

What is dependent variable?

Answer 2

The thing that you measure in the experiment.

Question 3

What are control variables?

Answer 3

The things that remain the same during an experiment.

Question 4

What is an aim?

Answer 4

What you are trying to achieve during an experiment. The aim should include the IV and the DV.

Question 5

What is a hypothesis?

Answer 5

An educated guess of the outcome of the experiment. The hypothesis should include the IV and the DV.

Question 6

In a risk assessment table, what are the three columns needed?

Answer 6

Dangerous item, possible harm, and safety precautions

Question 7

Why do we need to assess the risks of an experiment?

Answer 7

To keep the people conducting the experiment and other animals and/or objects from being harmed.

Question 8

What is equipment?

Answer 8

The objects needed to conduct the experiment.

Question 9

Why do we put measurements when stating what equipment is needed?

Answer 9

So we can be precise and other people can follow our method with precision.

Question 10

What is quantitive data?

Answer 10

Data that is in the form of numbers. For example, 5cm or 100mL or 8 balls.

Question 11

What is qualitive data?

Answer 11

Data that is in the form of expression. For example, tasty or it was salty or it was really cold.

Question 12

What is a method?

Answer 12

A step by step procedure used by someone to achieve something.

Question 13

Why do we have methods in science?

Answer 13

So people can follow it to recreate the experiment.

Question 14

Why are methods numbered?

Answer 14

So that we can follow them in order.

Question 15

What are two ways that you can record data?

Answer 15

In a table or in a graph.

Question 16

What type of graphs can you use to record data?

Answer 16

Line graph, bar graph, pie/sector graph, line graph.

Question 17

Why do we do multiple trials of the same IV?

Answer 17

To get an accurate reading of the actual value.

Question 18

How do you calculate the average of multiple values?

Answer 18

sum of all the values divided by the number of values

Question 19

What goes on the left side of a table?

Answer 19

The IV.

Question 20

What goes in the middle of the table?

Answer 20

The data recorded (or the DV).

Question 21

What goes on the right of the table (only when there are multiple trials)?

Answer 21

The Mean/Average.

Question 22

What is a parallax error?

Answer 22

You take a measurement when you aren’t looking at it from eye level.

Question 23

What is a zero error?

Answer 23

When an instrument doesn’t say 0 when it should say 0.

Question 24

What is an instrument error?

Answer 24

When an instrument is faulty. Zero error and Instrument error are different things.

Question 25

What is reading error?

Answer 25

It is when you read it incorrectly. For example, the water goes in between two measuring lines so you just take a rough estimate.

Question 26

What is an error?

Answer 26

Something that cannot be avoided even with care.

Question 27

What is a mistake?

Answer 27

Something that CAN be avoided with care.

Question 28

When a question asks for the precision of the data, what do you compare the data to?

Answer 28

You can either compare the data to the actual data in the background information or if you conducted multiple trials you can see the difference in the trials.