All Things Science!

Scientists often repeat their investigations of other scientists to see if they can get the same results. What is the practice of repeating investigations called?

• Hypothesis

• Modeling

• Observation

• Replication

A student grew 15 bean plants from the same type of seeds, in the same type of plastic cups, using the same type of soil. When the bean plants were about 8 cm tall, the student separated the plants into three groups. Group 1 was given 100 mL of plain water each week, group 2 was given 100mL of 10% sugar water each week, and group 3 was given 100 mL of 25% sugar water each week. The student recorded the height of each plant every other day for two months. Which group was the control group?

• Group 1

• Group 2

• Group 3

• There is no control group

Tags

NGSS.MS-LS2-1

Matter describes anything that has mass and takes up....

Tags

NGSS.MS-PS1-5

Which mixture is most easily separated with a sieve?

• Salt and sugar

• gravel and sand

• Dimes and pennies

• iron fillings and soil

Which of these does NOT show energy that creates change?

• A boy pushig a bowling ball

• A bowling ball falling off a shelf

• A bowling ball hitting another ball

• A bowling ball sitting on a shelf

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A student put a cup of water on a windowsill. A week later, they came back to see that the water disappeared! What actually happened?

• The water condensed on the outside of the cup

• The water boiled away

• The water evaporated into the air

• The water precipitated onto the shelf

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Melting, boiling, freezing, condensation, and evaporation are all examples of...

• Physical changes

• Chemical changes

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is an example of observing mechanical energy?

• Seeing a firecracker making sparks in the night sky

• Watching a large rock rolling down the side of a mountain

• Hearing a crackling sound on a cell phone during a lightning storm

• Listening to a change in pitch from a car horn while it moves a way

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of these objects conducts electricity?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-3

Choose the correct answer.

• A

• B

• C

• D

Tags

NGSS.3-PS2-1