Science test

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1 point

Why can we not change any of the constant variables?

Too much changing

We wont know what caused it

1 point

How did he change the second container?

He made the spout longer

He let bacteria in

1 point

What is the difference between an inference and an observation?

no difference

an inference is a possible explanation based on the observation which is a fact

they are both science

an observation is based on an inference

1 point

EXP #1
Bob
Chicken
Apple
Water
EXP #2
Bob
Chicken
Pie
Water
What is the independent variable?

Chicken

Bob

1 point

Does bacteria cause food to spoil?

Yes

1 point

Whats the constant variable?
EXP #1
Bob
Pie
EXP #2
Bob apple

Chicken

Bob

1 point

Why do we need a control group?

To see the original results

To have something to compare to

1 point

If there is a picture of a cookie and I say it is a cookie that is an inference.

True

False

1 point

Who was Luis Pasteur?

A scientist

A dentist

10.

1 point

Why do we need a hypothesis?

To see if we are right

Its fun

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