Unit 2 Earth Science

Independent variables are variables that the scientist....?

• observes
• Changes/controls

• keeps the same

• ignores

Dependent variables are variables that the scientist....?

• observes
• Changes/controls

• keeps the same

• ignores

A botanist wants to see how different colored light waves influence the growth of pea plants. She puts the same number of seeds into three identical pots with the same kind and amount of soil. She then gives them the same amount of water every three days for the length of the experiment. One pot is placed into a dark windowless closet, another pot is left on the windowsill, and the third is placed under a lamp with a green bulb. She observes & records the height of each plant every day for 3 months.

What is the independent variable in this experiment?

• Type of soil
• Different colored light waves given to the plant

• Height of the plants
• Amount of water

Tags

NGSS.MS-LS1-5

An experiment with rats was done where they were fed four different types of cheeses; cheddar, mozzarella, gouda, & brie. They did this for two weeks. Throughout the two weeks, they measured & recorded the mass/weight of the rats.

What is the dependent variable of this experiment?

• Mass/weight of the rats
• Number of rats in the experiment

• Type of cheese consumed
• Color of the cheese

Tags

NGSS.MS-LS2-1

Determine the independent variable from the following hypothesis: The more grams of salt a person eats, the higher their blood pressure. 

• Blood pressure
• Type of food eaten
• Age of the person
• Grams of salt a person eats

Tags

NGSS.HS-LS1-3

While graphing where does the independent variable go? Where does the Dependent variable go?

• On the x-axis for independent variable, and on the y-axis for dependent variable
• On the x-axis for independent variable, and on the z-axis for dependent variable
• On the z-axis for independent variable, and on the x-axis for dependent variable
• On the y-axis for independent variable, and on the x-axis for dependent variable

Which types of waves travel both liquids and solids?

• Electromagnetic waves
• P waves

• Light waves
• S waves

Tags

NGSS.MS-PS4-2

Define The following term- Crust

• Layer of the Earth's atmosphere
• Type of bread
• Part of a pie
• Made of oceanic and continental crust. The least dense layer

Tags

NGSS.MS-ESS2-2

Define oceanic crust

• A type of sedimentary rock found in the ocean
• Made of basalt, thinner, but more dense

• The layer of Earth's lithosphere found under the continents
• Made of granite, thicker, but less dense

Tags

NGSS.MS-ESS2-3

Define lithosphere

• The layer of the atmosphere above the stratosphere
• The outer most layer of the earth's atmosphere

• Outer most layer of the mantle. Rocky/Stone

• The liquid part of the earth's core