A scientist noticed that the number of salamanders in ponds of the Rocky Mountains was declining. This is a(n)

• Hypothesis

• Theory

• Observation

An English physician wanted to find the cause of malaria. Based on his observations, he suggested that the Anopheles mosquito transmits the microbe that causes malaria as the mosquito feeds. This suggestion is a(n)

• Perception

• Observation

• Hypothesis

Which of the following do scientists NOT use to support ideas?

• Opinions

• Evidence

• Experiments

A scientist’s data included observations based on how the plants look such as the color. What type of data would this be?

• Qualitative

• Quantitative

A scientist’s data included changes in plant height such as 5 mm or 10 m. What type of data would this be?

• Qualitative

• Quantitative

Which of the following is NOT one of Kepler’s Laws of Planetary Motion?

• All planets orbit the Sun at the same speed

• All planets orbit the Sun in elliptical paths

• Planets move faster when closer to the Sun

• There is a mathematical relationship between the size of the planet's ellipse and its orbital period

Which of these planets is the largest?

• Earth

• Jupiter

• Saturn

• Neptun

Earth's rotation takes about ____.

• 365 days

• 6 months

• 24 hours

• 1 month

Earth has seasons because ____.

• It rotates on its axis

• The distance between Earth and the Sun changes

• Its axis is tilted as it moves around the Sun

• The temperature of the Sun changes

Where is the asteroid belt located?

• Between Earth and Mars

• Between Mars and Jupiter

• Between Jupiter and Saturn

• Between Saturn and Uranus