RUSH Day 1 - Nature of Science

RUSH Day 1 - Nature of Science

By K. Husband

Multiple Choice

The bar graph show shows the population of bacteria under different temperature ranges. What can be concluded about the bacteria from this graph?

• They thrive at exactly $$30\degree C.$$

• They cannot tolerate temperatures above $$50\degree C.$$  

• They prefer temperatures between $$20\degree C\le30\degree C.$$  

• They prefer warmer temperatures to cooler temperatures.

Multiple Choice

A student lets a toy car roll four times down a ramp that is 1m long. Each time the student covers the surface of the ramp with a different material. The student measures the time it takes the car to roll down the ramp and records the results in the table below.

Which of these would be the best conclusion based on the data in the table?

• Different surfaces affect how fast a toy car accelerates.

• Different toy cars travel at different speeds.

• Gravity has little effect on the speed of toy cars on different surfaces.

• Air resistance is the greatest factor in limiting the acceleration of different toy cars.