Fast Science

The picture below shows the sun over the ocean. What does this picture demonstrate about the behavior of light?

• the water reflected the light from the Sun

• the water absorbed the light from the Sun

• The water refracted the light from the Sun

• light does not travel in straight lines

Tags

NGSS.MS-PS4-2

A student is investigating how mixtures can be separated. Which of the following combinations will be easiest to separate with a magnet?

• Salt and sand

• Sand and iron nails

• Aluminum cans and sand

• Salt and aluminum cans

Students were asked to list observations of the uses of energy in the classroom. One student's list is provided below. Which observations listed above used sound energy to perform its main functions?

• Observations 1 and 5

• Observations 2 and 6

• Observations 3 and 4

• Observations 5 and 6

Tags

NGSS.MS-PS4-2

the diagram below shows a lamp system. Which type of energy will travel through the wire in the lamp cord after the lamp is plugged in and the light is turned on?

• Electrical energy

• Light energy

• Mechanical energy

• Sound energy

A students was doing an experiment using the scientific method. Every three days the student plans to count the green leaves. Which would be a good hypothesis for this experiment?

• If plants are placed in direct sunlight, then they will grow more green leaves.

• If plants are places in bright light, then they will grow more green leaves than in dim light.

• If plants are place in clay pots, then they will grow more green leaves than plastic pots.

• If plants are in warmer temperatures, then they will grow more green leaves.

Tags

NGSS.MS-LS1-5

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is

• the male alligators

• the gender of the alligator

• the temperature

• the incubator

Tags

NGSS.MS-LS1-5

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is

• the temperature

• the size of the baby alligators

• the incubator

• the gender of the baby alligators

Tags

NGSS.MS-LS1-5

Cindy placed three beehives with the same mass into separate (but identical) glass containers. Hive A was kept at 100˚F, Hive B was kept at 0˚F, and Hive C was kept at room temperature (75˚F ) For the next month, she measured the amount of honey each hive produced. Hive C produced more honey than the other two hives.What is the test (INDEPENDENT) variable in Cindy's experiment?

• the temperature of each hive

• the number of hives

• the mass of each hive

• the amount of honey produced

What is being kept constant?

• amount of fertilizer

• amount of water

• height

Tags

NGSS.MS-LS1-5

What is the outcome (DEPENDENT) variable?

• plant height

• time in days

• sunflower

• daisy

Tags

NGSS.MS-LS1-5