SCIENCE REVIEW

Science Detective

100

A student writes, "The leaves are green." What science process skill is the student using?

Observing

200

Dark clouds are gathering in the afternoon.
What is the best prediction?

It will probably rain.

300

Which of the following is a prediction?

A. The water is boiling.
B. The water is 100°C.
C. The water will evaporate if it continues to boil.
D. Steam is rising from the pot.

C. The water will evaporate if it continues to boil.

400

A group used a ruler to measure the volume of water. Identify the mistake and explain how to correct it.

A ruler measures length, not volume. They should use a graduated cylinder to measure the volume of water.

Read the Data

100

Which graph is best for showing changes in temperature over one week?

Line graph

200

Which graph is best for comparing the favorite sports of students?

Bar graph

300

Why do scientists organize data into tables?

To organize and analyze data more easily.

400

A scientist measured the height of a plant over five days. On Monday, the plant was 2 cm tall. On Tuesday, it grew to 5 cm. On Wednesday, it reached 9 cm. On Thursday, it measured 10 cm, and on Friday, it reached 11 cm. What can you conclude?

• The plant showed continuous growth throughout the five days.

• The plant's height increased every day, but the rate of growth decreased toward the end of the week.

Measure Up!

100

Which SI unit measures the length of a pencil?

cm or inches

200

A scientist wants to measure the mass of a rock.
Which instrument should be used?

Triple beam balance

300

Convert 8 L to gal using GRCSA

Given: 8 L

Required: Convert liters (L) to gallons (gal).

Conversion Factor:
1 L = 0.2642 gal

Solution: 8 L× 0.2642 gal/1=2.1136 gal

Answer: 2.11 gal

400

Convert using GRCSA

265 km to mi

Given:
265 km

Required:
Convert kilometers (km) to miles (mi).

Conversion Factor:
1 km = 0.6214 mi

Solution:

265 km x 0.6214 mi/1km = 164.671 mi

Answer: 164.671 mi