Which of the following would make a good hypothesis?
a) Trees grow better in soil than sand.
b) Do bees like some flowers better than others?
c) I think apple juice tastes better than orange juice.
a) Trees grow better in soil than sand.
100
Why should a scientist always share the results of his or her experiments?
They want to make sure the findings are true.
100
Which of the following is a question Austin and Alex might have been trying to answer when they began their project?
a) Why do bugs live under logs?
b) What causes tree limbs to die?
c) What types of bugs live under logs?
c) What types of bugs live under logs?
100
Think of a system that you are part of. What is your job in that system?
I am part of a school. My part is to be a student.
100
Blocks A and B are the exact same size, but Block B is much heavier. This tells you that ___________________.
a) Block B has a greater volume
b) The molecules in Block B are packed more tightly together
c) Block B is made of a denser material
d) Both b and c
d) Both b and c
200
Give an explanation for why your answer to question 1 makes a good hypothesis.
a) It's a fact, not an opinion
b) It's something we can test to find out if it's true.
c) The answer can be graphed.
b) It's something we can test to find out if it's true.
200
A biologist who wants to know what kind of fish live in a lake would __________________________.
make observations.
200
What caused the balloon to inflate when Annie and Kimiko did their experiment?
a chemical reaction
200
Which of the following is not a system?
a) an ant colony
b) a cactus
c) a wooden board
c) a wooden board
200
Rubber that is stable _____________________.
does not easily melt or freeze
300
A ____________ is a theory that has never been proven wrong.
law
300
A physicist wants to know whether salt water boils more quickly than tap water, so she________________
designs an experiment.
300
Caroline wants to know if a piece of chalk will dissolve in liquid. She places chalk in water, pop, orange juice, and milk. In this experiment the liquids are _____________.
variables
300
What part could be missing, and still allow the clock to tell time?
The electricity of a clock could be missing and the clock could still work.
300
What is volume?
the amount of space something takes up
400
If an experiment fails to confirm your hypothesis, what is the next step?
Make another hypothesis.
400
By adding powder to rubber gum, Goodyear hoped that________________________
the rubber would become less sticky.
400
In Annie and Kimiko's experiment, why did the balloon inflate?
Mixing baking soda and vinegar creates a gas.
400
Which of the following could be a variable?
a) the size of the balloon
b the liquid in the bottle
c) the powder placed in the balloon
d) All of the above
d) All of the above
400
Weight and mass are the same thing ___________________.
when measuring volume
500
Which of the following could have been one of Goodyear's hypotheses?
a) What will make rubber a more stable product?
b) Adding sulfur to rubber will make the rubber stable.
c) Why isn't rubber stable at high or lower temperatures?
b) Adding sulfur to rubber will make the rubber stable.
500
A biologist gathers samples of four different kinds of mushrooms growing in the forest. This is an example of ________________________.
collecting information.
500
Alex and Austin looked under another log and saw two garter snakes. What conclusion can be drawn from the boys' observation?
Two garter snakes were found under the log the boys lifted.
500
Block A and Block B have the same volume. If Block A is less dense than Block B, which statement is true?
a) Blocks A and B have the same mass.
b) Block A is smaller than Block B.
c) Block B has more mass than Block A.
c) Block B has more mass than Block A.
500
Number the steps of the scientific method in the correct order.