Exit Check 2.1 - 1st Law

2.1.1

Match the following terms with a good description of them

• Theory

• A description of what effect will happen because of a given cause

• Hypothesis

• A predicted answer to an experiment question

• Observation

• An explanation of why observed patterns happen

• Law

• A fact or measurement

Answer explanation

This question links to success criteria 2.1.1: I can differentiate between a hypothesis, theory and law and understand the importance of each.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

2.1.1

Match the following ideas with an example of each:

• Law

• The toy car traveled 10 meters.

• Observation

• Gravity pulls objects together because all objects are made of mass, and all mass attracts other mass.

• Theory

• An object will not accelerate unless it is acted upon by an outside net force.

• Hypothesis

• In an experiment a toy car with less mass will go faster than a toy car with more mass.

Answer explanation

This question links to success criteria 2.1.1: I can differentiate between a hypothesis, theory and law and understand the importance of each.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-LS1-3

NGSS.HS-PS1-2

2.1.2

Is there an outside force acting to create the motion you see in the animation?

• The object's speed does not change, so there is no force

• The direction the object moves is changing, there must be an outside force.

• The center of the object doesn't move, so there is no outside force.

• The object is above the ground, there is a downward force.

Answer explanation

This question links to success criteria 2.1.2: I can determine whether an outside net force is acting upon an object based on its motion.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1

2.1.2

Which statement best summarizes the scientific concept shown in the cartoon?

• A falling body accelerates at a constant speed.

• The motion of an object is constantly changing due to magnetic forces.

• The force of friction causes an object in motion to move faster.

• A body in motion will remain in motion unless influenced by an outside force.

Answer explanation

This question links to success criteria 2.1.2: I can determine whether an outside net force is acting upon an object based on its motion.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1

2.1.2

What best describes the net force acting on the barbell while the weightlifter holds it steady (at rest) above his head?

• The object is not in motion, so there is no net force.

• It is heavy, so the net force is pointing down.

• It is heavy but he is strong, so the net force is pointing up.

• There are no forces acting on the barbell.

Answer explanation

This question links to success criteria 2.1.2: I can determine whether an outside net force is acting upon an object based on its motion.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

2.1.1

Why is it important that scientists modify scientific theories when important new information is discovered?

• to confuse other scientists

• to keep the theory interesting and fresh

• to keep the theory as accurate and effective as possible

• to make sure the general public does not understand the theory

Answer explanation

This question links to success criteria 2.1.1: I can differentiate between a hypothesis, theory and law and understand the importance of each.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS1-2

2.1.1

How does the use of the word theory in science compare to how it is used in everyday speech?

• people normally think a theory is just an idea but in science a theory has been tested many times and proven correct many times.

• People normally think a theory has been tested and proven but in science it is just an idea.

• There is no difference, a theory always means "just an idea"

• A Theory is a reason to make a youtube channel, it doesn't really happen in science.

Answer explanation

This question links to success criteria 2.1.1: I can differentiate between a hypothesis, theory and law and understand the importance of each.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

2.1.2

A race car is going around a corner on its race track.

The car ​ (a)   accelerating because it ​ (b)   ​changing direction. By the 1st Law, this means the net force ​ (c)   zero.

• is
• isn't

Answer explanation

This question links to success criteria 2.1.1: I can differentiate between a hypothesis, theory and law and understand the importance of each.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1

2.1.2

A student is running at 5 m/s in a straight line.The student ​ (a)   accelerating because their velocity ​ (b)   changing. By the 1st Law, this means the net force ​ (c)   zero.

• is
• isn't

Answer explanation

This question links to success criteria 2.1.1: I can differentiate between a hypothesis, theory and law and understand the importance of each.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1

2.1.2

A stone's weight pushes down on the earth but neither the stone nor the earth moves. The objects ​ (a)   accelerate because they ​ (b)   start moving. By the 1st Law, this means there ​ (c)   be a balancing force to keep the net force zero.

• does
• don't
• mustn't
• must

Answer explanation

This question links to success criteria 2.1.1: I can differentiate between a hypothesis, theory and law and understand the importance of each.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark.

Tags

NGSS.HS-PS2-1