End of Marking Period Science Practice

Adrian and Jesus are heading to the store from Adrian's home. They jumped down the stairs as gravity from the Earth pulled on them. Gravity is an example of a ______ force because it doesn't touch them.

• Contact

• Non-contact

Adrian grabbed the door knob and pulled open the door. This is an example of a (an) _____ force because his pull was greater than the friction and gravity that was keeping it closed.

• Balanced

• Unbalanced

Adrian and Jesus both hopped on their bikes. They could tell they were moving quickly as the trees seemed to blur as they passed them. The trees were considered a _______ point as they judged their speed.

• Unbalanaced

• Reference

Adrian and Jesus finally arrived at the store. After getting the items they had to wait in a long checkout line. Being tired from the ride, they both leaned on the support beam. Thankfully the _____ force kept them from falling down as the beam pushed back and did not move or break when they leaned on it.

• Balanced

• Unbalanced

What is made of only one type of atom

• Atoms

• Elements

• Compounds

• Mixtures

Use the image to answer the following question:

"What is the atomic number AND the number of neutrons associated with Argon based on a rounded atomic mass of 40 amu?"

• 18 and 22

• 22 and 40

• 40 and 18

An airplane leaves New York to fly to Los Angeles. It travels 3,850 km in 5.5 hours. What is the average speed of the airplane?

• 700 km

• 700 hours

• 700 km/hour

Look at the graph. Which statement best summarizes the relationship between kinetic energy (KE) and velocity (v)?

• As velocity increases, kinetic energy increases at a linear rate.

• As velocity increases, kinetic energy increases at an exponential rate.

• Velocity and kinetic energy do not have a mathematical relationship.

The following table shows information about three different objects sitting on a bookshelf. Use the information from the table to calculate the gravitational potential energy of object A.

(GPE=mgh). Choose the correct answer.

• 7.35 J

• 196 J

• 17.6 J

• 117.6 J

A battery has ___________ potential energy.

• electrical

• mechanical

• electro-magnetic

• chemical

• thermal