Physical Science -Midterm Review '25

Willow is presenting a project on scientific laws and theories. Which of the following statements should she include to explain the differences between the two?

• Scientific theories require scientific evidence but scientific laws do not.

• Scientific theories are based on observations and scientific laws are based on opinions.

• Scientific theories explain why something happens, and laws describe what happens.

• Scientific theories are rarely changed and scientific laws are modified frequently.

Hey there, science explorers! Tyler and Britney are on a quest to understand measurements. Can you help them by telling what two parts every measurement has?

• Time and distance

• Value and unit

• SI and English

• Mass and length

Imagine you're in a science lab with Josh, Gianna, and Charlotte. What role does a control variable play in your exciting experiment?

• a variable that stays the same throughout an experiment.

• a variable that is changed in an experiment.

• the largest, most powerful variable in an experiment.

• rarely used in scientific experiments.

Imagine Alex is driving his super cool car and he zooms from 10 m/s to 50 m/s in just 2 seconds! Can you calculate the acceleration of Alex's car?

• 10 m/s²

• 25 m/s²

• 40 m/s²

• 20 m/s²

Yax and Charlotte are on a spaceship traveling in space at 15.2 km/sec with its engines off. It is far from all gravitational or frictional forces. What will its speed be in 10 hours?

• Faster than 15.2 km/sec

• Slower than 15.2 km/sec

• 15.2 km/sec

• Cannot tell from the information given

Imagine you're on a mission with William, Declan, and Sienna to launch a rocket into space! How does the rocket gain altitude and leave the Earth’s atmosphere?

• The rocket exhaust pushes against the ground.

• The exhaust is thrust out of the rocket downward, causing the rocket to go up.

• The ground pushes against the exhaust leaving the rocket.

• The rocket exhaust pushes against the air.

Jacob and Tyler are playing catch with a baseball. If the baseball weighs 0.15 kilograms and Jacob throws it to Tyler at a speed of 20 m/s, what is the momentum of the baseball?

• 1.5 kg·m/s

• 3 kg·m/s

• 15 kg·m/s

• 30 kg·m/s

Tags

NGSS.HS-PS2-2

Peyton and her brother Jacob are having a blast roller skating at the park. Peyton has a mass of 60 kg and Jacob has a mass of 30 kg. When Peyton playfully pushes off Jacob, how do their accelerations compare?

• Peyton accelerates faster than Jacob.

• Jacob accelerates faster than Peyton.

• They both have the same acceleration.

• Neither will accelerate, because they are traveling at constant velocity.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

During a fun science experiment, Gianna and Brody decide to drop a 4.00 kg water balloon from the balcony of the North Penn auditorium. It falls 7.80 m before making a splash on the floor. What is the velocity the balloon reaches as it hits the floor?

• 16.4 m/s

• 12.4 m/s

• 17.5 m/s

• 109 m/s

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Alessio and Audrey are on a mission to move a magical block using their super strength! They need to push it with a force of 4 newtons over a distance of 10 meters. Can you help them calculate the work done in this fun adventure?

• 0.4 joules

• 2.5 joules

• 4 joules

• 40 joules

Tags

NGSS.MS-PS3-4