SC.5.N.1.1 MYA Review

MYA Review

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SC.5.N.1.1

Nature of Science

Observations

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Make sure the observations you gather in your experiment will help test your hypothesis

Remember to ​keep your variables straight!

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Some text here about the topic of discussion

Multiple Choice

Antonio and Addie want to know if perfume fumes affect plant height. They place five identical bean plants in five identical light boxes. In four of the boxes, they place 200 milliliters (mL) of perfume at different distances from the plants, and they make observations twice a week for one month. Which choice best identifies the observation data that should be included in their data table?

• a.       leaf colors and root lengths

• b.       amounts of perfume and types of plants

• c.       dates, perfume distances, and height of plants

• d.       types of perfume, stem colors, and number of flowers

Multiple Choice

Lily investigates which objects are attracted by a magnet. She tests a paper clip, a crayon, and a nail. She holds a magnet two centimeters away from the object being tested. Each time she tests an item, she uses a different magnet. In what way did she make a mistake setting up her investigation?

• a.       She should have tested a total of 10 items.

• b.       She should have used the same magnet in each trial.

• c.       She should have tested only one item in her investigation.

• d.       She should have held the magnet a centimeter away from each item.

Multiple Choice

Tonya and Mario are asked to use a pan balance to find the mass of the same rock. Tonya finds the rock's mass to be 680 grams. Mario finds the rock's mass to be 672 grams. Which is the best explanation for the difference in their measurements?

• a. Either Mario or Tonya measured the mass of the rock incorrectly on the pan balance.

• b. The rock was cold when Tonya measured its mass and hot when Mario measured in mass.

• c. The rock changed in size between the time Tonya measured it and the time Mario measured it.

• d. The rock broke before Mario measured it. So the mass of the two pieces together was less than when Tonya measured it.