Track quiz

"The pond will dry up early because the rains were weak." Which question helps test this?

• Does everyone feel that the rains were weak?
• Does the pond look sadder than it did last year?
• How many mm fell, and how many in dry years?

A prediction made from evidence and reasoning is best called what?

• A proven fact that no test can change
• An expectation with a reason behind it
• A wild guess made without any reason

A shop weighs your rice as "2". What is missing?

• A unit, such as kg or g
• A bigger number to be sure
• A second reading from another scale

Why is a kilogram the same everywhere?

• Each shop checks it against its own local object
• It changes a little from one country to the next
• It rests on an agreed international standard

A tap drips once a second, 0.05 mL a drip. About how much water is lost in a day?

• About 4 litres
• About 40 litres
• About 400 mL

40 pupils each drink 2 glasses of 250 mL. Someone says the class drinks 2 litres a day. What does a sense check say?

• It is about right, as 2 litres feels normal
• It is far too big for a class of 40 pupils
• It is far too small. The total is 20 litres.

Which detail can a model of the ride leave out?

• The colour of the bicycle
• How far away the school is
• How fast you ride

What does a scientific theory do?

• It names a pattern and stops there
• It explains why a pattern happens
• It is a guess that needs no testing

A prediction does not match what we see. What do scientists do?

• They throw away the result and move on
• They keep the idea and blame the weather
• They re-check assumptions, model and data

Which branches of science help explain a pressure cooker?

• Physics alone, as steam does the work
• Physics, chemistry and biology together
• None of them, a cooker is only a tool