Working with data REVISION 8 Science

Which of the following options best describes a hypothesis?

• a statement of an observation or fact

• an educated guess about a phenomenon

• a strong opinion on a particular subject

• a summary of the main conclusions of an experiment

Classify the following example as a method to collect primary or secondary data.

Annie observes her pet mice for 10 days and records the amount of food and water they consume.

• This is Primary Data collection

• This is Secondary Data collection

Classify the following example as a method to collect primary or secondary data.

Nathan researches the types of public transport available in New Delhi using a tourist guidebook and communicates his findings to his class.

• This is Primary Data collection

• This is Secondary Data collection

Classify the following example as a method to collect primary or secondary data.

Your teacher presents a list of the different types of fruits that grow in Brazil.

• This is Primary Data collection

• This is Secondary Data collection

Classify the following example as a method to collect primary or secondary data.

You want to find out how many children ride their bike to school. You count them outside your school every morning.

• This is Primary Data collection

• This is Secondary Data collection

Classify the following example as a method to collect primary or secondary data.

Alicia searches the New Zealand weather data to find out how much snow has fallen in Queenstown in July for the last three years, so she can decide whether to go snowboarding this year.

• This is Primary Data collection

• This is Secondary Data collection

An error made when your eye is not in line with the measurement is __________ error

• instrument

• zero

• parallax

An error that occurs when an instrument is faulty is _________ error

• instrument

• zero

• parallax

An error that occurs when the balance is not set to zero before measurements are taken is ________ error

• instrument

• zero

• parallax

What is the largest and smallest value that can be represented by 10±0.3?

• 10.2 and 9.8

• 10.4 and 9.6

• 7 and 13

• 10.3 and 9.7