Physical Science Mid-term Review

What is a hypothesis?

• A well-tested explanation

• An informed, educated guess based on your observations

• The part of an experiment that is changed

• The part of an experiment that remains the same

What is a scientific law?

• An explanation of things or events based on knowledge gained from many observations and investigations

• summary of the data collected during one experiment

• An educated guess about an experiment

• A statement about what happens in nature that seems to always be true

What is density?

• the ratio of liter per gram

• the ratio of an objects volume per unit mass

• the ratio of an object’s mass per unit volume

What is the purpose of using graphs and data tables?

answer choices

• To make the data appealing to viewers and increase the number of people who read articles about the study or experiment

• To make qualitative data and research easier to read and understand

• To make it easier to identify patterns or trends in the data that can support or disprove a hypothesis

What is matter?

• anything that has mass and takes up space

• liquids that have mass

• solids that have mass

Which of these substances is an element?

• water

• iron

• silicon dioxide

Water is _______.

• an element

• a compound

• homogeneous mixture

Tags

NGSS.MS-PS1-1

Which of the following is an example of a heterogeneous mixture?

• a chocolate chip cookie

• fruit salad

• pizza

• All of the choices are examples of heterogeneous mixtures

Which state of matter contains particles are close together but able to move around each other slowly?

• solid

• gas

• liquid

Tags

NGSS.MS-PS3-4

The three common states of matter on earth are ________.

• solid, liquid, and air

• gas, liquid, and solid

• gas, water, and solid

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4