Observation Vs. Inference Practice

Front

What is parallax error and why is it important to avoid it when measuring liquid volumes?

Back

Parallax error occurs when the measurement is read from an angle rather than straight on, leading to inaccurate readings. It is important to avoid it to ensure accurate volume measurements.

Front

What is the metric unit for measuring mass and how is it commonly used in scientific contexts?

Back

The metric unit for measuring mass is the kilogram (kg). It is commonly used in scientific contexts to quantify the amount of matter in an object.

Tags

NGSS.MS-PS1-5

Front

What is the first step to take in case of a chemical spill on the skin?

Back

The first step is to rinse the affected area immediately with water to dilute and remove the chemical.

Front

Why is it necessary to wear safety goggles over glasses during a lab involving fire and chemicals?

Back

Safety goggles provide a secure fit and additional protection against splashes and debris, which regular glasses may not adequately protect against.

Front

What is a Triple Beam Balance and how is it used in measuring mass?

Back

A Triple Beam Balance is a device used to measure mass with high precision. It consists of a beam with three sliding weights that can be adjusted to balance the object being measured.

Front

What is the significance of reading measurements at eye level?

Back

Reading measurements at eye level ensures that the observer's line of sight is perpendicular to the measurement scale, reducing the risk of parallax error.

Front

What safety equipment should be used when working with chemicals in a laboratory?

Back

Safety equipment includes safety goggles, gloves, lab coats, and fume hoods to protect against chemical exposure.

Front

What is the proper procedure for handling a chemical spill in the laboratory?

Back

The proper procedure includes alerting others, rinsing the affected area, and following the specific safety protocols outlined in the lab's safety guidelines.

Tags

NGSS.HS-ETS1-3

Front

How do you convert grams to kilograms?

Back

To convert grams to kilograms, divide the number of grams by 1000 (1 kg = 1000 g).

Front

What are the potential hazards of not wearing appropriate safety gear in a lab?

Back

Potential hazards include chemical burns, eye injuries, and exposure to harmful substances, which can lead to serious health issues.