1st 9wk Review

Ahmad can cycle 400 m in 2 minutes. His speed is ________

• 2 m/min

• 200 m/min

• 400 m/min

• 800 m/min

Tags

NGSS.MS-PS3-1

Mark and Nancy each run 100 m. Mark runs at a speed of 4 m/s. Nancy runs at a speed of 5 m/s. Who finishes running the 100m first?

• Mark

• Nancy

• Both finish at the same time

Huiting rode on her electric scooter round a 4-km circular path in a park. She took 40 min to complete

3 rounds of the same path. Find the speed of her electric scooter in km/h.

• 18 km/h

• 0.1 km/h

• 0.3 km/h

• 30 km/h

Tags

NGSS.MS-PS3-1

An object moves a distance of 100 meters in 20 seconds. What is the speed of the object?

• 100 m

• 20 s

• 5

• 5m/s

Tags

NGSS.MS-PS3-1

A car drives 250 km in 2.75 hours. What is its speed?

• 102.04 km/hr

• 0.01 km/hr

• 687.5 km/hr

• 90.91 km/hr

Is melting butter for popcorn a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-4

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many atoms of hydrogen are in

C₆H₁₂O₆

• 6

• 12

• 18

• 2

Tags

NGSS.MS-PS1-1

How many elements are in this compound?

NH₄NO₃

• 2

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1