Show:
Vocabulary 1
Measuring
Vocabulary 2
Scenarios
100

What is a hypothesis?

a testable prediction

example: If we increase the temperature of the water, the flowers will bloom slower

100

What units do you measure temperature in?

Degrees C

100
What is a system?
a set of objects working together
100

What is the independent and dependent variable:

If we increase the height of the ramp, the toy car will increase in speed

Independent - height of the ramp

Dependent - speed of the toy car

200

What does accuracy mean?

How precise you can measure something

200

What units do you measure distance in?

Km, m, cm, mm

200

How do you calculate an average?

Examples to help explain:

T1 - 3

T2 - 4

T3 - 2

You add all trials together for one result and then divide by how many trials there are

200

What is the independent and dependent variable:

If you increase the temperature on the water, the salt will dissolve faster

Independent - Temperature of the water (degrees C)

Dependent - How fast the salt dissolves (seconds)

300
What is a variable?
anything that you can change in an experiment that might affect the outcome
300

What units do you measure volume in?

L, ml

300
What is an independent variable?
the variable that you already know ahead of time
300

What is the independent and dependent variable:

If a plant receives more sunlight, it will grow taller

Independent - How much sunlight a plant gets

Dependent - how tall the plant grows (cm)

400
What is a dependent variable?
the variable that you find out by doing an experiment
400

What units do you measure mass in?

mg, g, kg

400
What is a controlled experiment?
an experiment in which one variable is changed and all other variables are kept the same
400

What is the independent and dependent variable:

If more baking soda is added to vinegar, then the reaction will produce more gas

Independent - the amount of baking soda (g)

Dependent - how much gas is produced (ml)

500
Name 2 of the 3 things that graphs can be used for.
to display results to look for experimental errors to make predictions
500

What units do you measure time in?

milliseconds, seconds, minutes, hours

500

What does doing multiple trials in an investigation help with?

makes the results more trustworthy and reliable

500

What is the independent and dependent variable:

Students who eat breakfast in the morning perform better on tests than students who don't.

Independent - Whether students eat breakfast or not

Dependent - the student scores on test