EOG Science

Which is an example of a physical change?

• boiling

• burning

• rotting

• rusting

Tags

NGSS.MS-PS3-4

A scientist has a hypothesis that a large volcanic eruption caused a change in global temperature. Which information gained from ice cores is MOST useful in supporting the scientist's hypothesis?

• levels of dissolved oxygen

• identities of trace metals

• estimates of natural radioactivity

• amounts of atmospheric dust

Tags

NGSS.MS-ESS3-5

Which project is MOST LIKELY to interest a scientist working at a biotechnology company?

• study and reconstruction of fossilized bones

• conservation of key species within ecosystems

• development of genetically modified corn plants

• prevention of sewage leaking into water supplies

Tags

NGSS.MS-LS4-5

Which source of water pollution includes oil and gasoline discharge from automobiles and storm sewer discharge?

• agriculture

• sedimentation

• bacteria

• urban runoff

Which BEST describes a bio-indicator?

• a species that has a short life span

• a species that depends on specific conditions to survive

• a species that can adapt to a variety of conditions

• a species that has been introduced to an ecosystem

Tags

NGSS.MS-LS2-4

What characteristic of aluminum allows it to be made into aluminum foil?

• It is dense.

• It is soluble.

• It is magnetic.

• It is malleable.

Which substance is composed of more than one element?

• water

• carbon

• gold

• sodium

Tags

NGSS.MS-PS1-1

In the current model of the Periodic Table of Elements, the elements have been placed in groups or families. Why have the elements been organized in such a way?

• Elements in each group have similar densities.

• Elements in each group all have similar boiling points.

• Elements in each group have similar physical and chemical properties.

• Elements in each group have the ability to chemically react with the other elements within that group.

A science teacher mixes calcium chloride and vinegar in a test tube. He passes the test tube around for his students to feel. The students notice that the test tube is hot. The science teacher asks the students to decide if the mixing of the two chemicals involved a physical or chemical change. He also asks the students to justify their answer. Which student gave the correct response?

• Student 1: The change was physical because a temperature change occurred.

• Student 2. The change was chemical because a temperature change occurred.

• Student 3: The change was physical because the two chemicals mixed.

• Student 4: The change was chemical because the two chemicals mixed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How would excessive increases in nitrate and phosphorus concentration affect freshwater systems?

• It would cause excessive algal blooms.

• It would cause increased dissolved oxygen.

• It would cause increased water clarity.

• It would cause extremely cold water.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4