CA GATE Scientific Inquiry and Reasoning

Question 1

A student notices that plants near the window grow taller than plants in the corner of the room. What is the BEST next step in a scientific investigation?

Accepted Answer

Form a hypothesis and design a controlled experiment

Answer

Conclude that sunlight causes taller plant growth

Answer

Move all plants to the window immediately

Answer

Ask the teacher why the plants are different

Question 2

In an experiment testing how water temperature affects goldfish activity, what is the independent variable?

Accepted Answer

The water temperature

Answer

The number of goldfish movements per minute

Answer

The size of the fish tank

Answer

The amount of food given to the fish

Question 3

Which of the following BEST describes a controlled experiment?

Accepted Answer

An experiment where only one variable changes while all others remain constant

Answer

An experiment where all variables change at the same time

Answer

An experiment that is repeated by many different scientists

Answer

An experiment conducted in a laboratory rather than outside

Question 4

A scientist collects data showing that as average daily temperature increases, ice cream sales also increase. What can be correctly concluded from this data?

Accepted Answer

There is a correlation between temperature and ice cream sales

Answer

Hot weather directly causes people to buy ice cream

Answer

Ice cream sales cause temperatures to rise

Answer

The data is not scientifically valid

Question 5

When measuring the length of an object, a student records 14.5 cm, 14.6 cm, and 14.5 cm in three trials. These results are BEST described as:

Accepted Answer

Precise but not necessarily accurate

Answer

Accurate but not precise

Answer

Neither accurate nor precise

Answer

Both accurate and precise without question

Question 6

Which statement BEST represents a valid scientific hypothesis?

Accepted Answer

If plants receive more sunlight, then they will grow taller

Answer

Plants are beautiful when they get sunlight

Answer

Sunlight is very important for plants

Answer

Scientists should study how sunlight affects plants

Question 7

A student's experiment produces results that do not support their hypothesis. What should the student do?

Accepted Answer

Analyze possible errors, revise the hypothesis, and retest

Answer

Change the data to match the hypothesis

Answer

Declare the experiment a failure and start over with a new topic

Answer

Ignore the results and look for a different experiment