Nature of Science

Objects and conditions that are moving are easier to observe, because our senses are especially good at noticing changes in our environment. Which condition does not fit into a "moving" category?

• A rusting hull of a ship.

• A campfire reduces wood to ash.

• A fireworks display.

• Boiling water in a tea kettle on a gas burner.

Choose the item that can only be observed using some kind of instrument (i.e. NOT just with the senses).

• heat from the Sun

• the planet Venus

• an earthquake

• a radio signal

With which of the senses could you determine whether the temperature would support wearing shorts or pants on a given day?

• touch

• smell

• sight

• hearing

Tags

NGSS.MS-LS1-8

Which is an example of an observation that cannot be made with the eyes.

• blue sky

• leaves moving

• wind blowing

• bus driving by

Tags

NGSS.MS-LS1-8

If a steel nail is wrapped 8 times with an insulated copper wire and each end of is attached to a 1.5 V battery, we find that it will lift the weight of 2 large paper clips. We hypothesized that for each 8 coils, you will be able to pick up one additional paper clip. When we ran the experiment, we observed and recorded that when we added 8 more wraps around the nail (16 coils) we could lift 4 paper clips and when we added 8 more wraps (24 coils) we could lift 6 paper clips. Choose the correct conclusion to the experiment.

• We concluded that something went wrong with the experiment since it didn't give us the results we expected.

• We concluded that our original test flawed. Because of the results, 8 coils should be able to pick up 2 paper clips. We will check our original test with a fresh battery.

• We redesign the test and hope for better results.

• We concluded that every time we add 8 wraps to the nail the total number of paper clips lifted doubled.

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS3-5

Hypothesis: Water is always denser than oil and we can test this by pouring equal quantities of water and cooking oil together in a container. The water sinks to the bottom and the oil is on top because it's less dense. We decide to change one factor: temperature. We put the mixture in a freezer all night. In the morning we notice that the water, now ice with bubbles, has risen to the top of the mixture. The oil is not frozen but is now on the bottom. Choose the best probable analysis to fit result.

• Oil loses its viscosity when it is cooled and causing it to ooze beneath the ice.

• When water freezes gas bubbles form making it less dense than oil and reversing their positions.

• Oil and water don't mix and eventually separate in the cold.

• When oil freezes it becomes denser.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What would be the best design for an experiment that tests how much water expands when frozen?

• What would be the best design for an experiment that tests how much water expands when frozen?

• Purchase a small plastic container and mark increments of volume on the outside. Put in 5 ounces of water and place in the freezing compartment of your refrigerator for 8 hours. Compare the end (frozen) volume with the beginning (liquid) volume.

• Purchase a small plastic container of bottled of water, any brand, commercially sealed. Mark water line with a marker. Place it in the freezing compartment of your refrigerator for 8 hours. Observe the results.

• None of the above

Tags

NGSS.MS-PS1-4

Which of the following is not true

• Physics and Chemistry are the foundation of the physical sciences

• Life science is the study of water and solar system

• Physical sciences study inorganic matter and its properties such as mass, energy and movements.

• Biology and organic chemistry are the basic sciences for life science studies.

If a person wanted to study volcanoes what area of science should he study?

• chemistry

• earth science

• physics

• anatomy

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

The study of fossil remains is ____________

• agronomy

• biophysics

• paleontology

• zoology

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2