Nature of Science Escape Station Copy5

A study was done to find if different tire treads affect the braking distance of a car.

What is the outcome (dependent) variable?

• The type of car

• The distance it takes to brake

• The type of tire tread

• The type of car

An investigation found that more bushels of potatoes were produced when the soil was fertilized more.

What is the (independent) variable?

• Type of potato

• Amount of soil

• Amount of fertilizer

• Size of potato

Different rose bushes are grown in a greenhouse for two months. The number of flowers on each bush is counted at the end of an experiment.

What is the tested (independent) variable?

• The rose bushes

• The number of flowers

• The time it took to grow.

• The greenhouse

You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives regular water. After a two-week period, the height is measured.

What is the outcome (dependent) variable?

• The sunflower plants

• The plant's location

• The height

• The type of water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Three wax palm trees are kept at different humidity levels inside of a greenhouse for 12 weeks. Height of the tree is measured once a week.

What is the tested (independent) variable?

• The humidity levels

• The height of the trees

• The type of tree

• The tree's location

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Different rose bushes are grown in a greenhouse for two months. The number of flowers on each bush is counted at the end of an experiment.

What is one variable that will need to be controlled?

• The type of rose bush

• The amount of time given to grow

• The amount of flowers

• The smell of the flowers

One tank of goldfish is fed the normal amount of food once a day, a second tank is fed twice a day, and a third tank four times a day during a six week study. The fish’s body fat is recorded daily.

What is the outcome (dependent) variable?

• The tank

• The type of fish food

• The amount of food

• The fish's body fat

Strawberry plant clones are given different amounts of water for a 3-week period. First strawberry plant receives 400 millilitres (ml) a day. The second strawberry plant receives 200 ml a day. The third strawberry plant receives 100 ml a day. The fourth strawberry plant does not receive any extra water; this plant only receives natural ways of receiving water. The height of the strawberry plants is recorded daily.

What is the outcome (dependent) variable?

• The type of strawberries

• The height of the strawberry

• The amount of strawberry seeds

• The amount of water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Students measured the temperature of the water at different depths in Lake Skywalker and found that the temperature varied.

What is the outcome (dependent) variable?

• The temperature of the water

• The depth of the thermometer

• The location of the lake

• The air temperature

Students design an experiment where they run a car down a ramp starting from two heights. The ramp is placed on the teacher desk (1 m tall) and the student desk (.75 m tall) and cars roll down the ramp. The distance the car travels was measured. What is the tested (independent) variable?

**The last word of the correct answer is your next clue**

• The type of ramp

• The type of car

• The height of the desk

• The amount of gravity