Catchable fatal error Object of class mysqli_result could not be converted to string

This is my PHP-Code:

<?php

include("dbconnect.php");

$abfrage = "SELECT Name, Adresse, Telefon, Nr FROM tbl_test1 WHERE 1"; $ergebnis = mysqli_query($db, $abfrage);

?> I want to show the Value of $ergebnis but it says that it could not be converted to sting. Iam a totaly beginner in PHP so please help me...