UIL Science Practice Test 1

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the atomic number for Gold?

Back

79

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum.

Front

What are the three classes of levers?

Back

1. First class: Fulcrum is between effort and load. 2. Second class: Load is between effort and fulcrum. 3. Third class: Effort is between load and fulcrum.

Front

What class of lever is a door with hinges?

Back

Second class – load force is between the effort force and the pivot point.

Front

What is a tsunami?

Back

A tsunami is a series of ocean waves caused by large disturbances, such as earthquakes.

Tags

NGSS.MS-ESS3-2

Front

What catastrophic event can be caused by an earthquake?

Back

Tsunami.

Tags

NGSS.MS-ESS3-2

Front

What is asbestos?

Back

Asbestos is a naturally occurring mineral that was widely used in insulation and is a known carcinogen.

Front

Why is asbestos banned in several countries?

Back

Asbestos is banned due to its health risks, including cancer when inhaled.

Front

What element makes up about 21% of the Earth’s atmosphere?

Back

Oxygen.