You place a 24 gram object into a graduated cylinder with 50 ml of water. The water rises to 62ml. What is the density of the object?

• 2 g/ml

• 3 g/ml

• 2.5 g/ml

• 1.8 g/ml

An observation that has been repeatedly confirmed

and for all practical purposes is accepted as “true".

• fact

• hypothesis

• inference

• scientific theory

The raccoon is attacking the person because it has rabies.

• observation

• inference

• fact

A tentative (subject to change) explanation that accounts for a set of facts and can be tested by further investigation.

• hypothesis

• fact

• scientific theory

• scientific law

Tags

NGSS.MS-LS1-5

_______ are designed to test hypotheses.

• experiments

• observations

• graphs

• microscopes

Tags

NGSS.MS-PS1-2

True or False.

A hypothesis can be supported, modified, or rejected based on collected data.

• true

• false

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

The variable that the

scientist intentionally changes or manipulates.

• independent variable

• dependent variable

• constant

• control group

Tags

NGSS.MS-PS2-2

The variable that is measured.

It is what is affected during the experiment.

• dependent variable

• independent variable

• constant

• control group

A part of the experiment that does not contain an independent variable.

One under "normal" conditions.

• control group

• constant

• hypothesis

• dependent variable

1. Trevor wanted to find out what type of lighting worked best for growing marigolds.  He planted 4 plants in pots, each exposed to a different type of light. Red light, Blue light, natural sun light, and one with no light at all.

2. What is the independent variable?

• amount of water and type of soil.

• type of light

• growth of the plant

• natural sun light

Tags

NGSS.MS-LS1-5